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Finding the Fourth Proportional to 480.18, 717.23 and 426.42

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Solution

The fourth proportional to 480.18, 717.23 and 426.42 is: 636.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.18 : 717.23 = 426.42 : x
  2. Step 2: Convert to fraction form
    480.18/717.23 = 426.42/x
  3. Step 3: Cross multiply
    480.18x = 717.23 × 426.42
  4. Step 4: Simplify right side
    480.18x = 305,839.08
  5. Step 5: Solve for x
    x = 305,839.08/480.18
  6. Step 6: Final answer
    x = 636.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.