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Finding the Fourth Proportional to 625.64, 861.22 and 541.58

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Solution

The fourth proportional to 625.64, 861.22 and 541.58 is: 745.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.64 : 861.22 = 541.58 : x
  2. Step 2: Convert to fraction form
    625.64/861.22 = 541.58/x
  3. Step 3: Cross multiply
    625.64x = 861.22 × 541.58
  4. Step 4: Simplify right side
    625.64x = 466,419.53
  5. Step 5: Solve for x
    x = 466,419.53/625.64
  6. Step 6: Final answer
    x = 745.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.