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Finding the Fourth Proportional to 170.45, 235.20 and 96.77

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Solution

The fourth proportional to 170.45, 235.20 and 96.77 is: 133.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.45 : 235.20 = 96.77 : x
  2. Step 2: Convert to fraction form
    170.45/235.20 = 96.77/x
  3. Step 3: Cross multiply
    170.45x = 235.20 × 96.77
  4. Step 4: Simplify right side
    170.45x = 22,758.64
  5. Step 5: Solve for x
    x = 22,758.64/170.45
  6. Step 6: Final answer
    x = 133.52

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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.