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Finding the Fourth Proportional to 296.80, 409.35 and 180.25

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Solution

The fourth proportional to 296.80, 409.35 and 180.25 is: 248.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.80 : 409.35 = 180.25 : x
  2. Step 2: Convert to fraction form
    296.80/409.35 = 180.25/x
  3. Step 3: Cross multiply
    296.80x = 409.35 × 180.25
  4. Step 4: Simplify right side
    296.80x = 73,785.34
  5. Step 5: Solve for x
    x = 73,785.34/296.80
  6. Step 6: Final answer
    x = 248.60

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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.