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Finding the Fourth Proportional to 789.96, 1,177.04 and 703.74

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Solution

The fourth proportional to 789.96, 1,177.04 and 703.74 is: 1,048.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.96 : 1,177.04 = 703.74 : x
  2. Step 2: Convert to fraction form
    789.96/1,177.04 = 703.74/x
  3. Step 3: Cross multiply
    789.96x = 1,177.04 × 703.74
  4. Step 4: Simplify right side
    789.96x = 828,330.13
  5. Step 5: Solve for x
    x = 828,330.13/789.96
  6. Step 6: Final answer
    x = 1,048.57

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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.