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Finding the Fourth Proportional to 700.20, 1,045.89 and 696.96

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Solution

The fourth proportional to 700.20, 1,045.89 and 696.96 is: 1,041.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.20 : 1,045.89 = 696.96 : x
  2. Step 2: Convert to fraction form
    700.20/1,045.89 = 696.96/x
  3. Step 3: Cross multiply
    700.20x = 1,045.89 × 696.96
  4. Step 4: Simplify right side
    700.20x = 728,943.49
  5. Step 5: Solve for x
    x = 728,943.49/700.20
  6. Step 6: Final answer
    x = 1,041.05

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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.