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Finding the Fourth Proportional to 59.18, 88.28 and 56.90

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Solution

The fourth proportional to 59.18, 88.28 and 56.90 is: 84.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.18 : 88.28 = 56.90 : x
  2. Step 2: Convert to fraction form
    59.18/88.28 = 56.90/x
  3. Step 3: Cross multiply
    59.18x = 88.28 × 56.90
  4. Step 4: Simplify right side
    59.18x = 5,023.13
  5. Step 5: Solve for x
    x = 5,023.13/59.18
  6. Step 6: Final answer
    x = 84.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.