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Finding the Fourth Proportional to 624.01, 935.80 and 315.66

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Solution

The fourth proportional to 624.01, 935.80 and 315.66 is: 473.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.01 : 935.80 = 315.66 : x
  2. Step 2: Convert to fraction form
    624.01/935.80 = 315.66/x
  3. Step 3: Cross multiply
    624.01x = 935.80 × 315.66
  4. Step 4: Simplify right side
    624.01x = 295,394.63
  5. Step 5: Solve for x
    x = 295,394.63/624.01
  6. Step 6: Final answer
    x = 473.38

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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.