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Finding the Fourth Proportional to 292.10, 403.25 and 213.62

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Solution

The fourth proportional to 292.10, 403.25 and 213.62 is: 294.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.10 : 403.25 = 213.62 : x
  2. Step 2: Convert to fraction form
    292.10/403.25 = 213.62/x
  3. Step 3: Cross multiply
    292.10x = 403.25 × 213.62
  4. Step 4: Simplify right side
    292.10x = 86,139.18
  5. Step 5: Solve for x
    x = 86,139.18/292.10
  6. Step 6: Final answer
    x = 294.90

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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.