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Finding the Fourth Proportional to 296.21, 408.70 and 191.36

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Solution

The fourth proportional to 296.21, 408.70 and 191.36 is: 264.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.21 : 408.70 = 191.36 : x
  2. Step 2: Convert to fraction form
    296.21/408.70 = 191.36/x
  3. Step 3: Cross multiply
    296.21x = 408.70 × 191.36
  4. Step 4: Simplify right side
    296.21x = 78,209.02
  5. Step 5: Solve for x
    x = 78,209.02/296.21
  6. Step 6: Final answer
    x = 264.03

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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.