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Finding the Fourth Proportional to 511.09, 703.99 and 400.37

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Solution

The fourth proportional to 511.09, 703.99 and 400.37 is: 551.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.09 : 703.99 = 400.37 : x
  2. Step 2: Convert to fraction form
    511.09/703.99 = 400.37/x
  3. Step 3: Cross multiply
    511.09x = 703.99 × 400.37
  4. Step 4: Simplify right side
    511.09x = 281,856.48
  5. Step 5: Solve for x
    x = 281,856.48/511.09
  6. Step 6: Final answer
    x = 551.48

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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.