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Finding the Fourth Proportional to 589.30, 884.10 and 515.50

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Solution

The fourth proportional to 589.30, 884.10 and 515.50 is: 773.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.30 : 884.10 = 515.50 : x
  2. Step 2: Convert to fraction form
    589.30/884.10 = 515.50/x
  3. Step 3: Cross multiply
    589.30x = 884.10 × 515.50
  4. Step 4: Simplify right side
    589.30x = 455,753.55
  5. Step 5: Solve for x
    x = 455,753.55/589.30
  6. Step 6: Final answer
    x = 773.38

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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.