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Finding the Fourth Proportional to 59.59, 89.30 and 39.23

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Solution

The fourth proportional to 59.59, 89.30 and 39.23 is: 58.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.59 : 89.30 = 39.23 : x
  2. Step 2: Convert to fraction form
    59.59/89.30 = 39.23/x
  3. Step 3: Cross multiply
    59.59x = 89.30 × 39.23
  4. Step 4: Simplify right side
    59.59x = 3,503.73
  5. Step 5: Solve for x
    x = 3,503.73/59.59
  6. Step 6: Final answer
    x = 58.80

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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.