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Finding the Fourth Proportional to 62.29, 85.97 and 51.91

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Solution

The fourth proportional to 62.29, 85.97 and 51.91 is: 71.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.29 : 85.97 = 51.91 : x
  2. Step 2: Convert to fraction form
    62.29/85.97 = 51.91/x
  3. Step 3: Cross multiply
    62.29x = 85.97 × 51.91
  4. Step 4: Simplify right side
    62.29x = 4,462.75
  5. Step 5: Solve for x
    x = 4,462.75/62.29
  6. Step 6: Final answer
    x = 71.65

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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.