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Finding the Fourth Proportional to 48.38, 66.82 and 45.37

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Solution

The fourth proportional to 48.38, 66.82 and 45.37 is: 62.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.38 : 66.82 = 45.37 : x
  2. Step 2: Convert to fraction form
    48.38/66.82 = 45.37/x
  3. Step 3: Cross multiply
    48.38x = 66.82 × 45.37
  4. Step 4: Simplify right side
    48.38x = 3,031.29
  5. Step 5: Solve for x
    x = 3,031.29/48.38
  6. Step 6: Final answer
    x = 62.66

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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.