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Finding the Fourth Proportional to 360.61, 497.48 and 220.68

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Solution

The fourth proportional to 360.61, 497.48 and 220.68 is: 304.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.61 : 497.48 = 220.68 : x
  2. Step 2: Convert to fraction form
    360.61/497.48 = 220.68/x
  3. Step 3: Cross multiply
    360.61x = 497.48 × 220.68
  4. Step 4: Simplify right side
    360.61x = 109,782.78
  5. Step 5: Solve for x
    x = 109,782.78/360.61
  6. Step 6: Final answer
    x = 304.44

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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.