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Finding the Fourth Proportional to 59.83, 82.50 and 40.39

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Solution

The fourth proportional to 59.83, 82.50 and 40.39 is: 55.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.83 : 82.50 = 40.39 : x
  2. Step 2: Convert to fraction form
    59.83/82.50 = 40.39/x
  3. Step 3: Cross multiply
    59.83x = 82.50 × 40.39
  4. Step 4: Simplify right side
    59.83x = 3,332.18
  5. Step 5: Solve for x
    x = 3,332.18/59.83
  6. Step 6: Final answer
    x = 55.69

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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.