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Finding the Fourth Proportional to 60, 82.74 and 49.05

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Solution

The fourth proportional to 60, 82.74 and 49.05 is: 67.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    60 : 82.74 = 49.05 : x
  2. Step 2: Convert to fraction form
    60/82.74 = 49.05/x
  3. Step 3: Cross multiply
    60x = 82.74 × 49.05
  4. Step 4: Simplify right side
    60x = 4,058.40
  5. Step 5: Solve for x
    x = 4,058.40/60
  6. Step 6: Final answer
    x = 67.64

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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.