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Finding the Fourth Proportional to 701.43, 969.21 and 555.23

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Solution

The fourth proportional to 701.43, 969.21 and 555.23 is: 767.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.43 : 969.21 = 555.23 : x
  2. Step 2: Convert to fraction form
    701.43/969.21 = 555.23/x
  3. Step 3: Cross multiply
    701.43x = 969.21 × 555.23
  4. Step 4: Simplify right side
    701.43x = 538,129.62
  5. Step 5: Solve for x
    x = 538,129.62/701.43
  6. Step 6: Final answer
    x = 767.19

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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.