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Finding the Fourth Proportional to 48.80, 66.98 and 43.50

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Solution

The fourth proportional to 48.80, 66.98 and 43.50 is: 59.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.80 : 66.98 = 43.50 : x
  2. Step 2: Convert to fraction form
    48.80/66.98 = 43.50/x
  3. Step 3: Cross multiply
    48.80x = 66.98 × 43.50
  4. Step 4: Simplify right side
    48.80x = 2,913.63
  5. Step 5: Solve for x
    x = 2,913.63/48.80
  6. Step 6: Final answer
    x = 59.71

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Why These Related Problems?

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