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Finding the Fourth Proportional to 292.65, 403.92 and 168.40

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Solution

The fourth proportional to 292.65, 403.92 and 168.40 is: 232.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.65 : 403.92 = 168.40 : x
  2. Step 2: Convert to fraction form
    292.65/403.92 = 168.40/x
  3. Step 3: Cross multiply
    292.65x = 403.92 × 168.40
  4. Step 4: Simplify right side
    292.65x = 68,020.13
  5. Step 5: Solve for x
    x = 68,020.13/292.65
  6. Step 6: Final answer
    x = 232.43

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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.