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Finding the Fourth Proportional to 91.26, 125.01 and 88.56

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Solution

The fourth proportional to 91.26, 125.01 and 88.56 is: 121.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91.26 : 125.01 = 88.56 : x
  2. Step 2: Convert to fraction form
    91.26/125.01 = 88.56/x
  3. Step 3: Cross multiply
    91.26x = 125.01 × 88.56
  4. Step 4: Simplify right side
    91.26x = 11,070.89
  5. Step 5: Solve for x
    x = 11,070.89/91.26
  6. Step 6: Final answer
    x = 121.31

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.