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Finding the Fourth Proportional to 363.66, 503.17 and 317.13

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Solution

The fourth proportional to 363.66, 503.17 and 317.13 is: 438.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.66 : 503.17 = 317.13 : x
  2. Step 2: Convert to fraction form
    363.66/503.17 = 317.13/x
  3. Step 3: Cross multiply
    363.66x = 503.17 × 317.13
  4. Step 4: Simplify right side
    363.66x = 159,570.30
  5. Step 5: Solve for x
    x = 159,570.30/363.66
  6. Step 6: Final answer
    x = 438.79

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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.