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Finding the Fourth Proportional to 480.89, 717.60 and 426.22

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Solution

The fourth proportional to 480.89, 717.60 and 426.22 is: 636.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.89 : 717.60 = 426.22 : x
  2. Step 2: Convert to fraction form
    480.89/717.60 = 426.22/x
  3. Step 3: Cross multiply
    480.89x = 717.60 × 426.22
  4. Step 4: Simplify right side
    480.89x = 305,852.88
  5. Step 5: Solve for x
    x = 305,852.88/480.89
  6. Step 6: Final answer
    x = 636.01

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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.