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Finding the Fourth Proportional to 360.88, 497.88 and 220.90

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Solution

The fourth proportional to 360.88, 497.88 and 220.90 is: 304.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.88 : 497.88 = 220.90 : x
  2. Step 2: Convert to fraction form
    360.88/497.88 = 220.90/x
  3. Step 3: Cross multiply
    360.88x = 497.88 × 220.90
  4. Step 4: Simplify right side
    360.88x = 109,981.69
  5. Step 5: Solve for x
    x = 109,981.69/360.88
  6. Step 6: Final answer
    x = 304.76

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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.