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Finding the Fourth Proportional to 615.58, 922.28 and 513.52

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Solution

The fourth proportional to 615.58, 922.28 and 513.52 is: 769.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.58 : 922.28 = 513.52 : x
  2. Step 2: Convert to fraction form
    615.58/922.28 = 513.52/x
  3. Step 3: Cross multiply
    615.58x = 922.28 × 513.52
  4. Step 4: Simplify right side
    615.58x = 473,604.35
  5. Step 5: Solve for x
    x = 473,604.35/615.58
  6. Step 6: Final answer
    x = 769.37

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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.