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Finding the Fourth Proportional to 671.91, 927.20 and 436.00

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Solution

The fourth proportional to 671.91, 927.20 and 436.00 is: 601.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.91 : 927.20 = 436.00 : x
  2. Step 2: Convert to fraction form
    671.91/927.20 = 436.00/x
  3. Step 3: Cross multiply
    671.91x = 927.20 × 436.00
  4. Step 4: Simplify right side
    671.91x = 404,253.35
  5. Step 5: Solve for x
    x = 404,253.35/671.91
  6. Step 6: Final answer
    x = 601.64

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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.