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Finding the Fourth Proportional to 465.56, 642.42 and 269

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Solution

The fourth proportional to 465.56, 642.42 and 269 is: 371.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.56 : 642.42 = 269 : x
  2. Step 2: Convert to fraction form
    465.56/642.42 = 269/x
  3. Step 3: Cross multiply
    465.56x = 642.42 × 269
  4. Step 4: Simplify right side
    465.56x = 172,810.98
  5. Step 5: Solve for x
    x = 172,810.98/465.56
  6. Step 6: Final answer
    x = 371.19

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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.