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Finding the Fourth Proportional to 62.18, 93.25 and 21.58

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Solution

The fourth proportional to 62.18, 93.25 and 21.58 is: 32.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.18 : 93.25 = 21.58 : x
  2. Step 2: Convert to fraction form
    62.18/93.25 = 21.58/x
  3. Step 3: Cross multiply
    62.18x = 93.25 × 21.58
  4. Step 4: Simplify right side
    62.18x = 2,012.13
  5. Step 5: Solve for x
    x = 2,012.13/62.18
  6. Step 6: Final answer
    x = 32.36

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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.