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Finding the Fourth Proportional to 511.03, 704.87 and 386.29

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Solution

The fourth proportional to 511.03, 704.87 and 386.29 is: 532.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.03 : 704.87 = 386.29 : x
  2. Step 2: Convert to fraction form
    511.03/704.87 = 386.29/x
  3. Step 3: Cross multiply
    511.03x = 704.87 × 386.29
  4. Step 4: Simplify right side
    511.03x = 272,282.30
  5. Step 5: Solve for x
    x = 272,282.30/511.03
  6. Step 6: Final answer
    x = 532.81

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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.