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Finding the Fourth Proportional to 292.52, 403.66 and 168.21

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Solution

The fourth proportional to 292.52, 403.66 and 168.21 is: 232.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.52 : 403.66 = 168.21 : x
  2. Step 2: Convert to fraction form
    292.52/403.66 = 168.21/x
  3. Step 3: Cross multiply
    292.52x = 403.66 × 168.21
  4. Step 4: Simplify right side
    292.52x = 67,900.24
  5. Step 5: Solve for x
    x = 67,900.24/292.52
  6. Step 6: Final answer
    x = 232.12

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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.