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Finding the Fourth Proportional to 402.94, 556.56 and 324.34

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Solution

The fourth proportional to 402.94, 556.56 and 324.34 is: 447.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.94 : 556.56 = 324.34 : x
  2. Step 2: Convert to fraction form
    402.94/556.56 = 324.34/x
  3. Step 3: Cross multiply
    402.94x = 556.56 × 324.34
  4. Step 4: Simplify right side
    402.94x = 180,514.67
  5. Step 5: Solve for x
    x = 180,514.67/402.94
  6. Step 6: Final answer
    x = 447.99

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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.