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Finding the Fourth Proportional to 625.52, 861.36 and 526.88

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Solution

The fourth proportional to 625.52, 861.36 and 526.88 is: 725.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.52 : 861.36 = 526.88 : x
  2. Step 2: Convert to fraction form
    625.52/861.36 = 526.88/x
  3. Step 3: Cross multiply
    625.52x = 861.36 × 526.88
  4. Step 4: Simplify right side
    625.52x = 453,833.36
  5. Step 5: Solve for x
    x = 453,833.36/625.52
  6. Step 6: Final answer
    x = 725.53

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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.