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Finding the Fourth Proportional to 59.49, 82.10 and 38.77

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Solution

The fourth proportional to 59.49, 82.10 and 38.77 is: 53.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.49 : 82.10 = 38.77 : x
  2. Step 2: Convert to fraction form
    59.49/82.10 = 38.77/x
  3. Step 3: Cross multiply
    59.49x = 82.10 × 38.77
  4. Step 4: Simplify right side
    59.49x = 3,182.62
  5. Step 5: Solve for x
    x = 3,182.62/59.49
  6. Step 6: Final answer
    x = 53.50

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Find fourth proportional to 29.75, 41.05 and 19.38
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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.