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Finding the Fourth Proportional to 1,014.82, 1,399.94 and 700.40

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Solution

The fourth proportional to 1,014.82, 1,399.94 and 700.40 is: 966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.82 : 1,399.94 = 700.40 : x
  2. Step 2: Convert to fraction form
    1,014.82/1,399.94 = 700.40/x
  3. Step 3: Cross multiply
    1,014.82x = 1,399.94 × 700.40
  4. Step 4: Simplify right side
    1,014.82x = 980,517.98
  5. Step 5: Solve for x
    x = 980,517.98/1,014.82
  6. Step 6: Final answer
    x = 966.20

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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.