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Finding the Fourth Proportional to 62.29, 86.07 and 51.77

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Solution

The fourth proportional to 62.29, 86.07 and 51.77 is: 71.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.29 : 86.07 = 51.77 : x
  2. Step 2: Convert to fraction form
    62.29/86.07 = 51.77/x
  3. Step 3: Cross multiply
    62.29x = 86.07 × 51.77
  4. Step 4: Simplify right side
    62.29x = 4,456.25
  5. Step 5: Solve for x
    x = 4,456.25/62.29
  6. Step 6: Final answer
    x = 71.54

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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.