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Finding the Fourth Proportional to 48.52, 66.53 and 45.79

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Solution

The fourth proportional to 48.52, 66.53 and 45.79 is: 62.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.52 : 66.53 = 45.79 : x
  2. Step 2: Convert to fraction form
    48.52/66.53 = 45.79/x
  3. Step 3: Cross multiply
    48.52x = 66.53 × 45.79
  4. Step 4: Simplify right side
    48.52x = 3,046.41
  5. Step 5: Solve for x
    x = 3,046.41/48.52
  6. Step 6: Final answer
    x = 62.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.