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Finding the Fourth Proportional to 293.48, 405.05 and 223.42

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Solution

The fourth proportional to 293.48, 405.05 and 223.42 is: 308.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.48 : 405.05 = 223.42 : x
  2. Step 2: Convert to fraction form
    293.48/405.05 = 223.42/x
  3. Step 3: Cross multiply
    293.48x = 405.05 × 223.42
  4. Step 4: Simplify right side
    293.48x = 90,495.66
  5. Step 5: Solve for x
    x = 90,495.66/293.48
  6. Step 6: Final answer
    x = 308.36

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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.