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Finding the Fourth Proportional to 402.82, 555.96 and 292.42

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Solution

The fourth proportional to 402.82, 555.96 and 292.42 is: 403.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.82 : 555.96 = 292.42 : x
  2. Step 2: Convert to fraction form
    402.82/555.96 = 292.42/x
  3. Step 3: Cross multiply
    402.82x = 555.96 × 292.42
  4. Step 4: Simplify right side
    402.82x = 162,573.82
  5. Step 5: Solve for x
    x = 162,573.82/402.82
  6. Step 6: Final answer
    x = 403.59

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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.