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Finding the Fourth Proportional to 95.77, 132.26 and 72.19

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Solution

The fourth proportional to 95.77, 132.26 and 72.19 is: 99.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.77 : 132.26 = 72.19 : x
  2. Step 2: Convert to fraction form
    95.77/132.26 = 72.19/x
  3. Step 3: Cross multiply
    95.77x = 132.26 × 72.19
  4. Step 4: Simplify right side
    95.77x = 9,547.85
  5. Step 5: Solve for x
    x = 9,547.85/95.77
  6. Step 6: Final answer
    x = 99.70

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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.