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Finding the Fourth Proportional to 630.52, 941.54 and 515.20

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Solution

The fourth proportional to 630.52, 941.54 and 515.20 is: 769.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.52 : 941.54 = 515.20 : x
  2. Step 2: Convert to fraction form
    630.52/941.54 = 515.20/x
  3. Step 3: Cross multiply
    630.52x = 941.54 × 515.20
  4. Step 4: Simplify right side
    630.52x = 485,081.41
  5. Step 5: Solve for x
    x = 485,081.41/630.52
  6. Step 6: Final answer
    x = 769.34

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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.