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Finding the Fourth Proportional to 59.90, 82.65 and 41.45

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Solution

The fourth proportional to 59.90, 82.65 and 41.45 is: 57.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.90 : 82.65 = 41.45 : x
  2. Step 2: Convert to fraction form
    59.90/82.65 = 41.45/x
  3. Step 3: Cross multiply
    59.90x = 82.65 × 41.45
  4. Step 4: Simplify right side
    59.90x = 3,425.84
  5. Step 5: Solve for x
    x = 3,425.84/59.90
  6. Step 6: Final answer
    x = 57.19

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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.