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Finding the Fourth Proportional to 465.17, 642.08 and 268.82

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Solution

The fourth proportional to 465.17, 642.08 and 268.82 is: 371.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.17 : 642.08 = 268.82 : x
  2. Step 2: Convert to fraction form
    465.17/642.08 = 268.82/x
  3. Step 3: Cross multiply
    465.17x = 642.08 × 268.82
  4. Step 4: Simplify right side
    465.17x = 172,603.95
  5. Step 5: Solve for x
    x = 172,603.95/465.17
  6. Step 6: Final answer
    x = 371.06

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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.