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Finding the Fourth Proportional to 48.92, 67.15 and 43.45

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Solution

The fourth proportional to 48.92, 67.15 and 43.45 is: 59.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.92 : 67.15 = 43.45 : x
  2. Step 2: Convert to fraction form
    48.92/67.15 = 43.45/x
  3. Step 3: Cross multiply
    48.92x = 67.15 × 43.45
  4. Step 4: Simplify right side
    48.92x = 2,917.55
  5. Step 5: Solve for x
    x = 2,917.55/48.92
  6. Step 6: Final answer
    x = 59.65

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