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Finding the Fourth Proportional to 385.06, 531.18 and 254.02

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Solution

The fourth proportional to 385.06, 531.18 and 254.02 is: 350.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.06 : 531.18 = 254.02 : x
  2. Step 2: Convert to fraction form
    385.06/531.18 = 254.02/x
  3. Step 3: Cross multiply
    385.06x = 531.18 × 254.02
  4. Step 4: Simplify right side
    385.06x = 134,930.34
  5. Step 5: Solve for x
    x = 134,930.34/385.06
  6. Step 6: Final answer
    x = 350.41

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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.