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Finding the Fourth Proportional to 296.55, 409.32 and 203.31

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Solution

The fourth proportional to 296.55, 409.32 and 203.31 is: 280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.55 : 409.32 = 203.31 : x
  2. Step 2: Convert to fraction form
    296.55/409.32 = 203.31/x
  3. Step 3: Cross multiply
    296.55x = 409.32 × 203.31
  4. Step 4: Simplify right side
    296.55x = 83,218.85
  5. Step 5: Solve for x
    x = 83,218.85/296.55
  6. Step 6: Final answer
    x = 280.62

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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.