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Finding the Fourth Proportional to 58.87, 80.20 and 58.69

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Solution

The fourth proportional to 58.87, 80.20 and 58.69 is: 79.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.87 : 80.20 = 58.69 : x
  2. Step 2: Convert to fraction form
    58.87/80.20 = 58.69/x
  3. Step 3: Cross multiply
    58.87x = 80.20 × 58.69
  4. Step 4: Simplify right side
    58.87x = 4,706.94
  5. Step 5: Solve for x
    x = 4,706.94/58.87
  6. Step 6: Final answer
    x = 79.95

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.