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Finding the Fourth Proportional to 466.27, 643.46 and 256.45

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Solution

The fourth proportional to 466.27, 643.46 and 256.45 is: 353.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.27 : 643.46 = 256.45 : x
  2. Step 2: Convert to fraction form
    466.27/643.46 = 256.45/x
  3. Step 3: Cross multiply
    466.27x = 643.46 × 256.45
  4. Step 4: Simplify right side
    466.27x = 165,017.97
  5. Step 5: Solve for x
    x = 165,017.97/466.27
  6. Step 6: Final answer
    x = 353.91

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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.