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Finding the Fourth Proportional to 48.85, 67.33 and 37.15

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Solution

The fourth proportional to 48.85, 67.33 and 37.15 is: 51.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.85 : 67.33 = 37.15 : x
  2. Step 2: Convert to fraction form
    48.85/67.33 = 37.15/x
  3. Step 3: Cross multiply
    48.85x = 67.33 × 37.15
  4. Step 4: Simplify right side
    48.85x = 2,501.68
  5. Step 5: Solve for x
    x = 2,501.68/48.85
  6. Step 6: Final answer
    x = 51.21

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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.