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Finding the Fourth Proportional to 587.25, 809.93 and 400.55

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Solution

The fourth proportional to 587.25, 809.93 and 400.55 is: 552.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.25 : 809.93 = 400.55 : x
  2. Step 2: Convert to fraction form
    587.25/809.93 = 400.55/x
  3. Step 3: Cross multiply
    587.25x = 809.93 × 400.55
  4. Step 4: Simplify right side
    587.25x = 324,414.41
  5. Step 5: Solve for x
    x = 324,414.41/587.25
  6. Step 6: Final answer
    x = 552.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.