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Finding the Fourth Proportional to 360.62, 497.78 and 220.83

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Solution

The fourth proportional to 360.62, 497.78 and 220.83 is: 304.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.62 : 497.78 = 220.83 : x
  2. Step 2: Convert to fraction form
    360.62/497.78 = 220.83/x
  3. Step 3: Cross multiply
    360.62x = 497.78 × 220.83
  4. Step 4: Simplify right side
    360.62x = 109,923.65
  5. Step 5: Solve for x
    x = 109,923.65/360.62
  6. Step 6: Final answer
    x = 304.82

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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.