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Finding the Fourth Proportional to 402.04, 554.46 and 254.56

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Solution

The fourth proportional to 402.04, 554.46 and 254.56 is: 351.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.04 : 554.46 = 254.56 : x
  2. Step 2: Convert to fraction form
    402.04/554.46 = 254.56/x
  3. Step 3: Cross multiply
    402.04x = 554.46 × 254.56
  4. Step 4: Simplify right side
    402.04x = 141,143.34
  5. Step 5: Solve for x
    x = 141,143.34/402.04
  6. Step 6: Final answer
    x = 351.07

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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.