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Finding the Fourth Proportional to 296.32, 408.96 and 193.28

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Solution

The fourth proportional to 296.32, 408.96 and 193.28 is: 266.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.32 : 408.96 = 193.28 : x
  2. Step 2: Convert to fraction form
    296.32/408.96 = 193.28/x
  3. Step 3: Cross multiply
    296.32x = 408.96 × 193.28
  4. Step 4: Simplify right side
    296.32x = 79,043.79
  5. Step 5: Solve for x
    x = 79,043.79/296.32
  6. Step 6: Final answer
    x = 266.75

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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.