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Finding the Fourth Proportional to 60, 89.96 and 21.46

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Solution

The fourth proportional to 60, 89.96 and 21.46 is: 32.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    60 : 89.96 = 21.46 : x
  2. Step 2: Convert to fraction form
    60/89.96 = 21.46/x
  3. Step 3: Cross multiply
    60x = 89.96 × 21.46
  4. Step 4: Simplify right side
    60x = 1,930.54
  5. Step 5: Solve for x
    x = 1,930.54/60
  6. Step 6: Final answer
    x = 32.18

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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.