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Finding the Fourth Proportional to 703.23, 970.55 and 408.48

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Solution

The fourth proportional to 703.23, 970.55 and 408.48 is: 563.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.23 : 970.55 = 408.48 : x
  2. Step 2: Convert to fraction form
    703.23/970.55 = 408.48/x
  3. Step 3: Cross multiply
    703.23x = 970.55 × 408.48
  4. Step 4: Simplify right side
    703.23x = 396,450.26
  5. Step 5: Solve for x
    x = 396,450.26/703.23
  6. Step 6: Final answer
    x = 563.76

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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.