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Finding the Fourth Proportional to 624.13, 934.86 and 315.47

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Solution

The fourth proportional to 624.13, 934.86 and 315.47 is: 472.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.13 : 934.86 = 315.47 : x
  2. Step 2: Convert to fraction form
    624.13/934.86 = 315.47/x
  3. Step 3: Cross multiply
    624.13x = 934.86 × 315.47
  4. Step 4: Simplify right side
    624.13x = 294,920.28
  5. Step 5: Solve for x
    x = 294,920.28/624.13
  6. Step 6: Final answer
    x = 472.53

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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.