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Finding the Fourth Proportional to 624.25, 935.16 and 315.19

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Solution

The fourth proportional to 624.25, 935.16 and 315.19 is: 472.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.25 : 935.16 = 315.19 : x
  2. Step 2: Convert to fraction form
    624.25/935.16 = 315.19/x
  3. Step 3: Cross multiply
    624.25x = 935.16 × 315.19
  4. Step 4: Simplify right side
    624.25x = 294,753.08
  5. Step 5: Solve for x
    x = 294,753.08/624.25
  6. Step 6: Final answer
    x = 472.17

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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.