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Finding the Fourth Proportional to 627.17, 865.53 and 365.19

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Solution

The fourth proportional to 627.17, 865.53 and 365.19 is: 503.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.17 : 865.53 = 365.19 : x
  2. Step 2: Convert to fraction form
    627.17/865.53 = 365.19/x
  3. Step 3: Cross multiply
    627.17x = 865.53 × 365.19
  4. Step 4: Simplify right side
    627.17x = 316,082.90
  5. Step 5: Solve for x
    x = 316,082.90/627.17
  6. Step 6: Final answer
    x = 503.99

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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.