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Finding the Fourth Proportional to 255.55, 354.13 and 240.14

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Solution

The fourth proportional to 255.55, 354.13 and 240.14 is: 332.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.55 : 354.13 = 240.14 : x
  2. Step 2: Convert to fraction form
    255.55/354.13 = 240.14/x
  3. Step 3: Cross multiply
    255.55x = 354.13 × 240.14
  4. Step 4: Simplify right side
    255.55x = 85,040.78
  5. Step 5: Solve for x
    x = 85,040.78/255.55
  6. Step 6: Final answer
    x = 332.78

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.