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Finding the Fourth Proportional to 703.56, 971.12 and 408.94

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Solution

The fourth proportional to 703.56, 971.12 and 408.94 is: 564.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.56 : 971.12 = 408.94 : x
  2. Step 2: Convert to fraction form
    703.56/971.12 = 408.94/x
  3. Step 3: Cross multiply
    703.56x = 971.12 × 408.94
  4. Step 4: Simplify right side
    703.56x = 397,130.20
  5. Step 5: Solve for x
    x = 397,130.20/703.56
  6. Step 6: Final answer
    x = 564.46

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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.