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Finding the Fourth Proportional to 296.56, 409.39 and 208.23

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Solution

The fourth proportional to 296.56, 409.39 and 208.23 is: 287.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.56 : 409.39 = 208.23 : x
  2. Step 2: Convert to fraction form
    296.56/409.39 = 208.23/x
  3. Step 3: Cross multiply
    296.56x = 409.39 × 208.23
  4. Step 4: Simplify right side
    296.56x = 85,246.40
  5. Step 5: Solve for x
    x = 85,246.40/296.56
  6. Step 6: Final answer
    x = 287.45

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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.