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Finding the Fourth Proportional to 625.15, 935.70 and 576.55

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Solution

The fourth proportional to 625.15, 935.70 and 576.55 is: 862.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.15 : 935.70 = 576.55 : x
  2. Step 2: Convert to fraction form
    625.15/935.70 = 576.55/x
  3. Step 3: Cross multiply
    625.15x = 935.70 × 576.55
  4. Step 4: Simplify right side
    625.15x = 539,477.84
  5. Step 5: Solve for x
    x = 539,477.84/625.15
  6. Step 6: Final answer
    x = 862.96

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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.