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Finding the Fourth Proportional to 240.76, 331.84 and 220.10

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Solution

The fourth proportional to 240.76, 331.84 and 220.10 is: 303.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.76 : 331.84 = 220.10 : x
  2. Step 2: Convert to fraction form
    240.76/331.84 = 220.10/x
  3. Step 3: Cross multiply
    240.76x = 331.84 × 220.10
  4. Step 4: Simplify right side
    240.76x = 73,037.98
  5. Step 5: Solve for x
    x = 73,037.98/240.76
  6. Step 6: Final answer
    x = 303.36

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Find fourth proportional to 120.38, 165.92 and 110.05
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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.