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Finding the Fourth Proportional to 60, 83.16 and 59.10

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Solution

The fourth proportional to 60, 83.16 and 59.10 is: 81.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    60 : 83.16 = 59.10 : x
  2. Step 2: Convert to fraction form
    60/83.16 = 59.10/x
  3. Step 3: Cross multiply
    60x = 83.16 × 59.10
  4. Step 4: Simplify right side
    60x = 4,914.76
  5. Step 5: Solve for x
    x = 4,914.76/60
  6. Step 6: Final answer
    x = 81.91

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.