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Finding the Fourth Proportional to 702.05, 968.86 and 422.29

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Solution

The fourth proportional to 702.05, 968.86 and 422.29 is: 582.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.05 : 968.86 = 422.29 : x
  2. Step 2: Convert to fraction form
    702.05/968.86 = 422.29/x
  3. Step 3: Cross multiply
    702.05x = 968.86 × 422.29
  4. Step 4: Simplify right side
    702.05x = 409,139.89
  5. Step 5: Solve for x
    x = 409,139.89/702.05
  6. Step 6: Final answer
    x = 582.78

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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.