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Finding the Fourth Proportional to 48.00, 72.25 and 43.74

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Solution

The fourth proportional to 48.00, 72.25 and 43.74 is: 65.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.00 : 72.25 = 43.74 : x
  2. Step 2: Convert to fraction form
    48.00/72.25 = 43.74/x
  3. Step 3: Cross multiply
    48.00x = 72.25 × 43.74
  4. Step 4: Simplify right side
    48.00x = 3,160.55
  5. Step 5: Solve for x
    x = 3,160.55/48.00
  6. Step 6: Final answer
    x = 65.85

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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.