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Finding the Fourth Proportional to 642.44, 963.56 and 180.27

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Solution

The fourth proportional to 642.44, 963.56 and 180.27 is: 270.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    642.44 : 963.56 = 180.27 : x
  2. Step 2: Convert to fraction form
    642.44/963.56 = 180.27/x
  3. Step 3: Cross multiply
    642.44x = 963.56 × 180.27
  4. Step 4: Simplify right side
    642.44x = 173,701.41
  5. Step 5: Solve for x
    x = 173,701.41/642.44
  6. Step 6: Final answer
    x = 270.38

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1.5x scale

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.