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Finding the Fourth Proportional to 48.24, 66.62 and 32.70

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Solution

The fourth proportional to 48.24, 66.62 and 32.70 is: 45.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.24 : 66.62 = 32.70 : x
  2. Step 2: Convert to fraction form
    48.24/66.62 = 32.70/x
  3. Step 3: Cross multiply
    48.24x = 66.62 × 32.70
  4. Step 4: Simplify right side
    48.24x = 2,178.47
  5. Step 5: Solve for x
    x = 2,178.47/48.24
  6. Step 6: Final answer
    x = 45.16

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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.