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Finding the Fourth Proportional to 624.86, 935.28 and 331.95

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Solution

The fourth proportional to 624.86, 935.28 and 331.95 is: 496.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.86 : 935.28 = 331.95 : x
  2. Step 2: Convert to fraction form
    624.86/935.28 = 331.95/x
  3. Step 3: Cross multiply
    624.86x = 935.28 × 331.95
  4. Step 4: Simplify right side
    624.86x = 310,466.20
  5. Step 5: Solve for x
    x = 310,466.20/624.86
  6. Step 6: Final answer
    x = 496.86

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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.