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Finding the Fourth Proportional to 68.11, 101.32 and 66.08

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Solution

The fourth proportional to 68.11, 101.32 and 66.08 is: 98.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.11 : 101.32 = 66.08 : x
  2. Step 2: Convert to fraction form
    68.11/101.32 = 66.08/x
  3. Step 3: Cross multiply
    68.11x = 101.32 × 66.08
  4. Step 4: Simplify right side
    68.11x = 6,695.31
  5. Step 5: Solve for x
    x = 6,695.31/68.11
  6. Step 6: Final answer
    x = 98.31

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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.