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Finding the Fourth Proportional to 293.31, 405.12 and 291.29

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Solution

The fourth proportional to 293.31, 405.12 and 291.29 is: 402.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.31 : 405.12 = 291.29 : x
  2. Step 2: Convert to fraction form
    293.31/405.12 = 291.29/x
  3. Step 3: Cross multiply
    293.31x = 405.12 × 291.29
  4. Step 4: Simplify right side
    293.31x = 118,006.47
  5. Step 5: Solve for x
    x = 118,006.47/293.31
  6. Step 6: Final answer
    x = 402.33

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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.