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Finding the Fourth Proportional to 48.89, 73.27 and 39.22

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Solution

The fourth proportional to 48.89, 73.27 and 39.22 is: 58.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.89 : 73.27 = 39.22 : x
  2. Step 2: Convert to fraction form
    48.89/73.27 = 39.22/x
  3. Step 3: Cross multiply
    48.89x = 73.27 × 39.22
  4. Step 4: Simplify right side
    48.89x = 2,873.29
  5. Step 5: Solve for x
    x = 2,873.29/48.89
  6. Step 6: Final answer
    x = 58.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.