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Finding the Fourth Proportional to 626.41, 936.17 and 577.15

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Solution

The fourth proportional to 626.41, 936.17 and 577.15 is: 862.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.41 : 936.17 = 577.15 : x
  2. Step 2: Convert to fraction form
    626.41/936.17 = 577.15/x
  3. Step 3: Cross multiply
    626.41x = 936.17 × 577.15
  4. Step 4: Simplify right side
    626.41x = 540,305.29
  5. Step 5: Solve for x
    x = 540,305.29/626.41
  6. Step 6: Final answer
    x = 862.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.