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Finding the Fourth Proportional to 296.54, 409.20 and 165.54

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Solution

The fourth proportional to 296.54, 409.20 and 165.54 is: 228.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.54 : 409.20 = 165.54 : x
  2. Step 2: Convert to fraction form
    296.54/409.20 = 165.54/x
  3. Step 3: Cross multiply
    296.54x = 409.20 × 165.54
  4. Step 4: Simplify right side
    296.54x = 67,738.97
  5. Step 5: Solve for x
    x = 67,738.97/296.54
  6. Step 6: Final answer
    x = 228.43

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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.