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Finding the Fourth Proportional to 48.20, 66.44 and 32.66

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Solution

The fourth proportional to 48.20, 66.44 and 32.66 is: 45.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.20 : 66.44 = 32.66 : x
  2. Step 2: Convert to fraction form
    48.20/66.44 = 32.66/x
  3. Step 3: Cross multiply
    48.20x = 66.44 × 32.66
  4. Step 4: Simplify right side
    48.20x = 2,169.68
  5. Step 5: Solve for x
    x = 2,169.68/48.20
  6. Step 6: Final answer
    x = 45.01

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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.