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Finding the Fourth Proportional to 511.26, 765.52 and 424.30

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Solution

The fourth proportional to 511.26, 765.52 and 424.30 is: 635.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.26 : 765.52 = 424.30 : x
  2. Step 2: Convert to fraction form
    511.26/765.52 = 424.30/x
  3. Step 3: Cross multiply
    511.26x = 765.52 × 424.30
  4. Step 4: Simplify right side
    511.26x = 324,807.16
  5. Step 5: Solve for x
    x = 324,807.16/511.26
  6. Step 6: Final answer
    x = 635.31

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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.