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Finding the Fourth Proportional to 96.15, 143.50 and 88.28

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Solution

The fourth proportional to 96.15, 143.50 and 88.28 is: 131.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.15 : 143.50 = 88.28 : x
  2. Step 2: Convert to fraction form
    96.15/143.50 = 88.28/x
  3. Step 3: Cross multiply
    96.15x = 143.50 × 88.28
  4. Step 4: Simplify right side
    96.15x = 12,667.24
  5. Step 5: Solve for x
    x = 12,667.24/96.15
  6. Step 6: Final answer
    x = 131.74

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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.