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Finding the Fourth Proportional to 59.77, 82.40 and 58.48

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Solution

The fourth proportional to 59.77, 82.40 and 58.48 is: 80.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.77 : 82.40 = 58.48 : x
  2. Step 2: Convert to fraction form
    59.77/82.40 = 58.48/x
  3. Step 3: Cross multiply
    59.77x = 82.40 × 58.48
  4. Step 4: Simplify right side
    59.77x = 4,818.44
  5. Step 5: Solve for x
    x = 4,818.44/59.77
  6. Step 6: Final answer
    x = 80.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.