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Finding the Fourth Proportional to 803.28, 1,197.87 and 758.82

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Solution

The fourth proportional to 803.28, 1,197.87 and 758.82 is: 1,131.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.28 : 1,197.87 = 758.82 : x
  2. Step 2: Convert to fraction form
    803.28/1,197.87 = 758.82/x
  3. Step 3: Cross multiply
    803.28x = 1,197.87 × 758.82
  4. Step 4: Simplify right side
    803.28x = 908,967.71
  5. Step 5: Solve for x
    x = 908,967.71/803.28
  6. Step 6: Final answer
    x = 1,131.57

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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.