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Finding the Fourth Proportional to 702.26, 969.02 and 418.64

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Solution

The fourth proportional to 702.26, 969.02 and 418.64 is: 577.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.26 : 969.02 = 418.64 : x
  2. Step 2: Convert to fraction form
    702.26/969.02 = 418.64/x
  3. Step 3: Cross multiply
    702.26x = 969.02 × 418.64
  4. Step 4: Simplify right side
    702.26x = 405,663.59
  5. Step 5: Solve for x
    x = 405,663.59/702.26
  6. Step 6: Final answer
    x = 577.66

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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.