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Finding the Fourth Proportional to 96.76, 133.57 and 76

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Solution

The fourth proportional to 96.76, 133.57 and 76 is: 104.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.76 : 133.57 = 76 : x
  2. Step 2: Convert to fraction form
    96.76/133.57 = 76/x
  3. Step 3: Cross multiply
    96.76x = 133.57 × 76
  4. Step 4: Simplify right side
    96.76x = 10,151.32
  5. Step 5: Solve for x
    x = 10,151.32/96.76
  6. Step 6: Final answer
    x = 104.91

Related Problems

Find fourth proportional to 48.38, 66.79 and 38
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1.5x scale

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.