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Finding the Fourth Proportional to 360.95, 541.10 and 257.97

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Solution

The fourth proportional to 360.95, 541.10 and 257.97 is: 386.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.95 : 541.10 = 257.97 : x
  2. Step 2: Convert to fraction form
    360.95/541.10 = 257.97/x
  3. Step 3: Cross multiply
    360.95x = 541.10 × 257.97
  4. Step 4: Simplify right side
    360.95x = 139,586.28
  5. Step 5: Solve for x
    x = 139,586.28/360.95
  6. Step 6: Final answer
    x = 386.72

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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.