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Finding the Fourth Proportional to 502.19, 753.94 and 317.15

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Solution

The fourth proportional to 502.19, 753.94 and 317.15 is: 476.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.19 : 753.94 = 317.15 : x
  2. Step 2: Convert to fraction form
    502.19/753.94 = 317.15/x
  3. Step 3: Cross multiply
    502.19x = 753.94 × 317.15
  4. Step 4: Simplify right side
    502.19x = 239,112.07
  5. Step 5: Solve for x
    x = 239,112.07/502.19
  6. Step 6: Final answer
    x = 476.14

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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.