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Finding the Fourth Proportional to 1,230.28, 1,845.41 and 499.68

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Solution

The fourth proportional to 1,230.28, 1,845.41 and 499.68 is: 749.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.28 : 1,845.41 = 499.68 : x
  2. Step 2: Convert to fraction form
    1,230.28/1,845.41 = 499.68/x
  3. Step 3: Cross multiply
    1,230.28x = 1,845.41 × 499.68
  4. Step 4: Simplify right side
    1,230.28x = 922,114.47
  5. Step 5: Solve for x
    x = 922,114.47/1,230.28
  6. Step 6: Final answer
    x = 749.52

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.