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Finding the Fourth Proportional to 468.28, 646.23 and 271.91

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Solution

The fourth proportional to 468.28, 646.23 and 271.91 is: 375.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.28 : 646.23 = 271.91 : x
  2. Step 2: Convert to fraction form
    468.28/646.23 = 271.91/x
  3. Step 3: Cross multiply
    468.28x = 646.23 × 271.91
  4. Step 4: Simplify right side
    468.28x = 175,713.87
  5. Step 5: Solve for x
    x = 175,713.87/468.28
  6. Step 6: Final answer
    x = 375.23

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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.