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Finding the Fourth Proportional to 240.66, 330.66 and 191.45

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Solution

The fourth proportional to 240.66, 330.66 and 191.45 is: 263.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.66 : 330.66 = 191.45 : x
  2. Step 2: Convert to fraction form
    240.66/330.66 = 191.45/x
  3. Step 3: Cross multiply
    240.66x = 330.66 × 191.45
  4. Step 4: Simplify right side
    240.66x = 63,305.29
  5. Step 5: Solve for x
    x = 63,305.29/240.66
  6. Step 6: Final answer
    x = 263.05

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.