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Finding the Fourth Proportional to 370.26, 554.31 and 254.40

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Solution

The fourth proportional to 370.26, 554.31 and 254.40 is: 380.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.26 : 554.31 = 254.40 : x
  2. Step 2: Convert to fraction form
    370.26/554.31 = 254.40/x
  3. Step 3: Cross multiply
    370.26x = 554.31 × 254.40
  4. Step 4: Simplify right side
    370.26x = 141,016.46
  5. Step 5: Solve for x
    x = 141,016.46/370.26
  6. Step 6: Final answer
    x = 380.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.