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Finding the Fourth Proportional to 902.82, 1,246.41 and 623.46

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Solution

The fourth proportional to 902.82, 1,246.41 and 623.46 is: 860.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.82 : 1,246.41 = 623.46 : x
  2. Step 2: Convert to fraction form
    902.82/1,246.41 = 623.46/x
  3. Step 3: Cross multiply
    902.82x = 1,246.41 × 623.46
  4. Step 4: Simplify right side
    902.82x = 777,080.55
  5. Step 5: Solve for x
    x = 777,080.55/902.82
  6. Step 6: Final answer
    x = 860.73

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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.