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Finding the Fourth Proportional to 59.60, 82.10 and 55.82

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Solution

The fourth proportional to 59.60, 82.10 and 55.82 is: 76.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.60 : 82.10 = 55.82 : x
  2. Step 2: Convert to fraction form
    59.60/82.10 = 55.82/x
  3. Step 3: Cross multiply
    59.60x = 82.10 × 55.82
  4. Step 4: Simplify right side
    59.60x = 4,582.82
  5. Step 5: Solve for x
    x = 4,582.82/59.60
  6. Step 6: Final answer
    x = 76.89

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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.