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Finding the Fourth Proportional to 624.45, 935.86 and 316.14

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Solution

The fourth proportional to 624.45, 935.86 and 316.14 is: 473.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.45 : 935.86 = 316.14 : x
  2. Step 2: Convert to fraction form
    624.45/935.86 = 316.14/x
  3. Step 3: Cross multiply
    624.45x = 935.86 × 316.14
  4. Step 4: Simplify right side
    624.45x = 295,862.78
  5. Step 5: Solve for x
    x = 295,862.78/624.45
  6. Step 6: Final answer
    x = 473.80

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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.