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Finding the Fourth Proportional to 96.89, 145.32 and 35.19

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Solution

The fourth proportional to 96.89, 145.32 and 35.19 is: 52.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.89 : 145.32 = 35.19 : x
  2. Step 2: Convert to fraction form
    96.89/145.32 = 35.19/x
  3. Step 3: Cross multiply
    96.89x = 145.32 × 35.19
  4. Step 4: Simplify right side
    96.89x = 5,113.72
  5. Step 5: Solve for x
    x = 5,113.72/96.89
  6. Step 6: Final answer
    x = 52.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.