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Finding the Fourth Proportional to 60.60, 90.92 and 19.47

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Solution

The fourth proportional to 60.60, 90.92 and 19.47 is: 29.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.60 : 90.92 = 19.47 : x
  2. Step 2: Convert to fraction form
    60.60/90.92 = 19.47/x
  3. Step 3: Cross multiply
    60.60x = 90.92 × 19.47
  4. Step 4: Simplify right side
    60.60x = 1,770.60
  5. Step 5: Solve for x
    x = 1,770.60/60.60
  6. Step 6: Final answer
    x = 29.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.