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Finding the Fourth Proportional to 589.26, 879.32 and 511.50

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Solution

The fourth proportional to 589.26, 879.32 and 511.50 is: 763.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.26 : 879.32 = 511.50 : x
  2. Step 2: Convert to fraction form
    589.26/879.32 = 511.50/x
  3. Step 3: Cross multiply
    589.26x = 879.32 × 511.50
  4. Step 4: Simplify right side
    589.26x = 449,772.18
  5. Step 5: Solve for x
    x = 449,772.18/589.26
  6. Step 6: Final answer
    x = 763.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.