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Finding the Fourth Proportional to 371.18, 511.98 and 260.48

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Solution

The fourth proportional to 371.18, 511.98 and 260.48 is: 359.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.18 : 511.98 = 260.48 : x
  2. Step 2: Convert to fraction form
    371.18/511.98 = 260.48/x
  3. Step 3: Cross multiply
    371.18x = 511.98 × 260.48
  4. Step 4: Simplify right side
    371.18x = 133,360.55
  5. Step 5: Solve for x
    x = 133,360.55/371.18
  6. Step 6: Final answer
    x = 359.29

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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.