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Finding the Fourth Proportional to 702.81, 1,049.29 and 633.69

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Solution

The fourth proportional to 702.81, 1,049.29 and 633.69 is: 946.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.81 : 1,049.29 = 633.69 : x
  2. Step 2: Convert to fraction form
    702.81/1,049.29 = 633.69/x
  3. Step 3: Cross multiply
    702.81x = 1,049.29 × 633.69
  4. Step 4: Simplify right side
    702.81x = 664,923.00
  5. Step 5: Solve for x
    x = 664,923.00/702.81
  6. Step 6: Final answer
    x = 946.09

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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.