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Finding the Fourth Proportional to 1,245.99, 1,866.11 and 758.17

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Solution

The fourth proportional to 1,245.99, 1,866.11 and 758.17 is: 1,135.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.99 : 1,866.11 = 758.17 : x
  2. Step 2: Convert to fraction form
    1,245.99/1,866.11 = 758.17/x
  3. Step 3: Cross multiply
    1,245.99x = 1,866.11 × 758.17
  4. Step 4: Simplify right side
    1,245.99x = 1,414,827.16
  5. Step 5: Solve for x
    x = 1,414,827.16/1,245.99
  6. Step 6: Final answer
    x = 1,135.50

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.