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Finding the Fourth Proportional to 436.32, 655.68 and 292.92

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Solution

The fourth proportional to 436.32, 655.68 and 292.92 is: 440.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.32 : 655.68 = 292.92 : x
  2. Step 2: Convert to fraction form
    436.32/655.68 = 292.92/x
  3. Step 3: Cross multiply
    436.32x = 655.68 × 292.92
  4. Step 4: Simplify right side
    436.32x = 192,061.79
  5. Step 5: Solve for x
    x = 192,061.79/436.32
  6. Step 6: Final answer
    x = 440.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.