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Finding the Fourth Proportional to 59.23, 88.85 and 20.72

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Solution

The fourth proportional to 59.23, 88.85 and 20.72 is: 31.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.23 : 88.85 = 20.72 : x
  2. Step 2: Convert to fraction form
    59.23/88.85 = 20.72/x
  3. Step 3: Cross multiply
    59.23x = 88.85 × 20.72
  4. Step 4: Simplify right side
    59.23x = 1,840.97
  5. Step 5: Solve for x
    x = 1,840.97/59.23
  6. Step 6: Final answer
    x = 31.08

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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.