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Finding the Fourth Proportional to 62.62, 85.89 and 55.33

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Solution

The fourth proportional to 62.62, 85.89 and 55.33 is: 75.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.62 : 85.89 = 55.33 : x
  2. Step 2: Convert to fraction form
    62.62/85.89 = 55.33/x
  3. Step 3: Cross multiply
    62.62x = 85.89 × 55.33
  4. Step 4: Simplify right side
    62.62x = 4,752.29
  5. Step 5: Solve for x
    x = 4,752.29/62.62
  6. Step 6: Final answer
    x = 75.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.