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Finding the Fourth Proportional to 49.32, 73.42 and 48.68

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Solution

The fourth proportional to 49.32, 73.42 and 48.68 is: 72.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.32 : 73.42 = 48.68 : x
  2. Step 2: Convert to fraction form
    49.32/73.42 = 48.68/x
  3. Step 3: Cross multiply
    49.32x = 73.42 × 48.68
  4. Step 4: Simplify right side
    49.32x = 3,574.09
  5. Step 5: Solve for x
    x = 3,574.09/49.32
  6. Step 6: Final answer
    x = 72.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.