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Finding the Fourth Proportional to 436.93, 656.71 and 254.68

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Solution

The fourth proportional to 436.93, 656.71 and 254.68 is: 382.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.93 : 656.71 = 254.68 : x
  2. Step 2: Convert to fraction form
    436.93/656.71 = 254.68/x
  3. Step 3: Cross multiply
    436.93x = 656.71 × 254.68
  4. Step 4: Simplify right side
    436.93x = 167,248.62
  5. Step 5: Solve for x
    x = 167,248.62/436.93
  6. Step 6: Final answer
    x = 382.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.