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Finding the Fourth Proportional to 703.11, 970.14 and 408.23

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Solution

The fourth proportional to 703.11, 970.14 and 408.23 is: 563.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.11 : 970.14 = 408.23 : x
  2. Step 2: Convert to fraction form
    703.11/970.14 = 408.23/x
  3. Step 3: Cross multiply
    703.11x = 970.14 × 408.23
  4. Step 4: Simplify right side
    703.11x = 396,033.36
  5. Step 5: Solve for x
    x = 396,033.36/703.11
  6. Step 6: Final answer
    x = 563.26

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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.