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Finding the Fourth Proportional to 62.87, 86.63 and 48.29

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Solution

The fourth proportional to 62.87, 86.63 and 48.29 is: 66.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.87 : 86.63 = 48.29 : x
  2. Step 2: Convert to fraction form
    62.87/86.63 = 48.29/x
  3. Step 3: Cross multiply
    62.87x = 86.63 × 48.29
  4. Step 4: Simplify right side
    62.87x = 4,182.69
  5. Step 5: Solve for x
    x = 4,182.69/62.87
  6. Step 6: Final answer
    x = 66.53

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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.