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Finding the Fourth Proportional to 696.10, 955.51 and 615.66

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Solution

The fourth proportional to 696.10, 955.51 and 615.66 is: 845.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.10 : 955.51 = 615.66 : x
  2. Step 2: Convert to fraction form
    696.10/955.51 = 615.66/x
  3. Step 3: Cross multiply
    696.10x = 955.51 × 615.66
  4. Step 4: Simplify right side
    696.10x = 588,269.29
  5. Step 5: Solve for x
    x = 588,269.29/696.10
  6. Step 6: Final answer
    x = 845.09

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.