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Finding the Fourth Proportional to 59.48, 82.09 and 40.08

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Solution

The fourth proportional to 59.48, 82.09 and 40.08 is: 55.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.48 : 82.09 = 40.08 : x
  2. Step 2: Convert to fraction form
    59.48/82.09 = 40.08/x
  3. Step 3: Cross multiply
    59.48x = 82.09 × 40.08
  4. Step 4: Simplify right side
    59.48x = 3,290.17
  5. Step 5: Solve for x
    x = 3,290.17/59.48
  6. Step 6: Final answer
    x = 55.32

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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.