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Finding the Fourth Proportional to 59.28, 88.93 and 20.76

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Solution

The fourth proportional to 59.28, 88.93 and 20.76 is: 31.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.28 : 88.93 = 20.76 : x
  2. Step 2: Convert to fraction form
    59.28/88.93 = 20.76/x
  3. Step 3: Cross multiply
    59.28x = 88.93 × 20.76
  4. Step 4: Simplify right side
    59.28x = 1,846.08
  5. Step 5: Solve for x
    x = 1,846.08/59.28
  6. Step 6: Final answer
    x = 31.14

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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.