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Finding the Fourth Proportional to 48.04, 71.67 and 40.87

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Solution

The fourth proportional to 48.04, 71.67 and 40.87 is: 60.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.04 : 71.67 = 40.87 : x
  2. Step 2: Convert to fraction form
    48.04/71.67 = 40.87/x
  3. Step 3: Cross multiply
    48.04x = 71.67 × 40.87
  4. Step 4: Simplify right side
    48.04x = 2,928.59
  5. Step 5: Solve for x
    x = 2,928.59/48.04
  6. Step 6: Final answer
    x = 60.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.