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Finding the Fourth Proportional to 296.42, 408.91 and 178.34

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Solution

The fourth proportional to 296.42, 408.91 and 178.34 is: 246.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.42 : 408.91 = 178.34 : x
  2. Step 2: Convert to fraction form
    296.42/408.91 = 178.34/x
  3. Step 3: Cross multiply
    296.42x = 408.91 × 178.34
  4. Step 4: Simplify right side
    296.42x = 72,925.01
  5. Step 5: Solve for x
    x = 72,925.01/296.42
  6. Step 6: Final answer
    x = 246.02

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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.