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Finding the Fourth Proportional to 474.91, 710.82 and 255.22

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Solution

The fourth proportional to 474.91, 710.82 and 255.22 is: 382.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.91 : 710.82 = 255.22 : x
  2. Step 2: Convert to fraction form
    474.91/710.82 = 255.22/x
  3. Step 3: Cross multiply
    474.91x = 710.82 × 255.22
  4. Step 4: Simplify right side
    474.91x = 181,413.70
  5. Step 5: Solve for x
    x = 181,413.70/474.91
  6. Step 6: Final answer
    x = 382.00

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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.