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Finding the Fourth Proportional to 60.95, 84.22 and 48.77

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Solution

The fourth proportional to 60.95, 84.22 and 48.77 is: 67.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.95 : 84.22 = 48.77 : x
  2. Step 2: Convert to fraction form
    60.95/84.22 = 48.77/x
  3. Step 3: Cross multiply
    60.95x = 84.22 × 48.77
  4. Step 4: Simplify right side
    60.95x = 4,107.74
  5. Step 5: Solve for x
    x = 4,107.74/60.95
  6. Step 6: Final answer
    x = 67.39

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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.