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Finding the Fourth Proportional to 48.26, 66.57 and 32.72

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Solution

The fourth proportional to 48.26, 66.57 and 32.72 is: 45.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.26 : 66.57 = 32.72 : x
  2. Step 2: Convert to fraction form
    48.26/66.57 = 32.72/x
  3. Step 3: Cross multiply
    48.26x = 66.57 × 32.72
  4. Step 4: Simplify right side
    48.26x = 2,177.76
  5. Step 5: Solve for x
    x = 2,177.76/48.26
  6. Step 6: Final answer
    x = 45.13

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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.