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Finding the Fourth Proportional to 360.60, 497.61 and 220.69

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Solution

The fourth proportional to 360.60, 497.61 and 220.69 is: 304.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.60 : 497.61 = 220.69 : x
  2. Step 2: Convert to fraction form
    360.60/497.61 = 220.69/x
  3. Step 3: Cross multiply
    360.60x = 497.61 × 220.69
  4. Step 4: Simplify right side
    360.60x = 109,817.55
  5. Step 5: Solve for x
    x = 109,817.55/360.60
  6. Step 6: Final answer
    x = 304.54

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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.