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Finding the Fourth Proportional to 700.45, 1,049.15 and 691.94

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Solution

The fourth proportional to 700.45, 1,049.15 and 691.94 is: 1,036.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.45 : 1,049.15 = 691.94 : x
  2. Step 2: Convert to fraction form
    700.45/1,049.15 = 691.94/x
  3. Step 3: Cross multiply
    700.45x = 1,049.15 × 691.94
  4. Step 4: Simplify right side
    700.45x = 725,953.20
  5. Step 5: Solve for x
    x = 725,953.20/700.45
  6. Step 6: Final answer
    x = 1,036.41

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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.