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Finding the Fourth Proportional to 62.51, 85.78 and 60.98

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Solution

The fourth proportional to 62.51, 85.78 and 60.98 is: 83.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.51 : 85.78 = 60.98 : x
  2. Step 2: Convert to fraction form
    62.51/85.78 = 60.98/x
  3. Step 3: Cross multiply
    62.51x = 85.78 × 60.98
  4. Step 4: Simplify right side
    62.51x = 5,230.86
  5. Step 5: Solve for x
    x = 5,230.86/62.51
  6. Step 6: Final answer
    x = 83.68

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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.