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Finding the Fourth Proportional to 95.58, 131.95 and 74.81

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Solution

The fourth proportional to 95.58, 131.95 and 74.81 is: 103.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.58 : 131.95 = 74.81 : x
  2. Step 2: Convert to fraction form
    95.58/131.95 = 74.81/x
  3. Step 3: Cross multiply
    95.58x = 131.95 × 74.81
  4. Step 4: Simplify right side
    95.58x = 9,871.18
  5. Step 5: Solve for x
    x = 9,871.18/95.58
  6. Step 6: Final answer
    x = 103.28

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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.