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Finding the Fourth Proportional to 360.62, 497.64 and 213.20

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Solution

The fourth proportional to 360.62, 497.64 and 213.20 is: 294.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.62 : 497.64 = 213.20 : x
  2. Step 2: Convert to fraction form
    360.62/497.64 = 213.20/x
  3. Step 3: Cross multiply
    360.62x = 497.64 × 213.20
  4. Step 4: Simplify right side
    360.62x = 106,097.03
  5. Step 5: Solve for x
    x = 106,097.03/360.62
  6. Step 6: Final answer
    x = 294.21

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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.