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Finding the Fourth Proportional to 252.60, 348.75 and 220.20

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Solution

The fourth proportional to 252.60, 348.75 and 220.20 is: 304.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.60 : 348.75 = 220.20 : x
  2. Step 2: Convert to fraction form
    252.60/348.75 = 220.20/x
  3. Step 3: Cross multiply
    252.60x = 348.75 × 220.20
  4. Step 4: Simplify right side
    252.60x = 76,794.75
  5. Step 5: Solve for x
    x = 76,794.75/252.60
  6. Step 6: Final answer
    x = 304.02

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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.