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Finding the Fourth Proportional to 48.54, 73.17 and 45.24

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Solution

The fourth proportional to 48.54, 73.17 and 45.24 is: 68.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.54 : 73.17 = 45.24 : x
  2. Step 2: Convert to fraction form
    48.54/73.17 = 45.24/x
  3. Step 3: Cross multiply
    48.54x = 73.17 × 45.24
  4. Step 4: Simplify right side
    48.54x = 3,310.21
  5. Step 5: Solve for x
    x = 3,310.21/48.54
  6. Step 6: Final answer
    x = 68.20

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.