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Finding the Fourth Proportional to 296.85, 409.53 and 180.40

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Solution

The fourth proportional to 296.85, 409.53 and 180.40 is: 248.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.85 : 409.53 = 180.40 : x
  2. Step 2: Convert to fraction form
    296.85/409.53 = 180.40/x
  3. Step 3: Cross multiply
    296.85x = 409.53 × 180.40
  4. Step 4: Simplify right side
    296.85x = 73,879.21
  5. Step 5: Solve for x
    x = 73,879.21/296.85
  6. Step 6: Final answer
    x = 248.88

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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.