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Finding the Fourth Proportional to 702.09, 967.86 and 491.63

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Solution

The fourth proportional to 702.09, 967.86 and 491.63 is: 677.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.09 : 967.86 = 491.63 : x
  2. Step 2: Convert to fraction form
    702.09/967.86 = 491.63/x
  3. Step 3: Cross multiply
    702.09x = 967.86 × 491.63
  4. Step 4: Simplify right side
    702.09x = 475,824.17
  5. Step 5: Solve for x
    x = 475,824.17/702.09
  6. Step 6: Final answer
    x = 677.73

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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.