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Finding the Fourth Proportional to 756.83, 1,132.47 and 698.73

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Solution

The fourth proportional to 756.83, 1,132.47 and 698.73 is: 1,045.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.83 : 1,132.47 = 698.73 : x
  2. Step 2: Convert to fraction form
    756.83/1,132.47 = 698.73/x
  3. Step 3: Cross multiply
    756.83x = 1,132.47 × 698.73
  4. Step 4: Simplify right side
    756.83x = 791,290.76
  5. Step 5: Solve for x
    x = 791,290.76/756.83
  6. Step 6: Final answer
    x = 1,045.54

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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.