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Finding the Fourth Proportional to 71.05, 106.05 and 60.97

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Solution

The fourth proportional to 71.05, 106.05 and 60.97 is: 91.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.05 : 106.05 = 60.97 : x
  2. Step 2: Convert to fraction form
    71.05/106.05 = 60.97/x
  3. Step 3: Cross multiply
    71.05x = 106.05 × 60.97
  4. Step 4: Simplify right side
    71.05x = 6,465.26
  5. Step 5: Solve for x
    x = 6,465.26/71.05
  6. Step 6: Final answer
    x = 91.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.