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Finding the Fourth Proportional to 251.55, 351.45 and 251.55

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Solution

The fourth proportional to 251.55, 351.45 and 251.55 is: 351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.55 : 351.45 = 251.55 : x
  2. Step 2: Convert to fraction form
    251.55/351.45 = 251.55/x
  3. Step 3: Cross multiply
    251.55x = 351.45 × 251.55
  4. Step 4: Simplify right side
    251.55x = 88,407.25
  5. Step 5: Solve for x
    x = 88,407.25/251.55
  6. Step 6: Final answer
    x = 351.45

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.