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Finding the Fourth Proportional to 61.01, 84.18 and 34.79

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Solution

The fourth proportional to 61.01, 84.18 and 34.79 is: 48.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.01 : 84.18 = 34.79 : x
  2. Step 2: Convert to fraction form
    61.01/84.18 = 34.79/x
  3. Step 3: Cross multiply
    61.01x = 84.18 × 34.79
  4. Step 4: Simplify right side
    61.01x = 2,928.20
  5. Step 5: Solve for x
    x = 2,928.20/61.01
  6. Step 6: Final answer
    x = 48.00

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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.