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Finding the Fourth Proportional to 699.05, 963.56 and 615.62

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Solution

The fourth proportional to 699.05, 963.56 and 615.62 is: 848.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.05 : 963.56 = 615.62 : x
  2. Step 2: Convert to fraction form
    699.05/963.56 = 615.62/x
  3. Step 3: Cross multiply
    699.05x = 963.56 × 615.62
  4. Step 4: Simplify right side
    699.05x = 593,190.76
  5. Step 5: Solve for x
    x = 593,190.76/699.05
  6. Step 6: Final answer
    x = 848.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.