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Finding the Fourth Proportional to 478.00, 717.22 and 283.39

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Solution

The fourth proportional to 478.00, 717.22 and 283.39 is: 425.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.00 : 717.22 = 283.39 : x
  2. Step 2: Convert to fraction form
    478.00/717.22 = 283.39/x
  3. Step 3: Cross multiply
    478.00x = 717.22 × 283.39
  4. Step 4: Simplify right side
    478.00x = 203,251.54
  5. Step 5: Solve for x
    x = 203,251.54/478.00
  6. Step 6: Final answer
    x = 425.21

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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.