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Finding the Fourth Proportional to 703.58, 970.91 and 408.83

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Solution

The fourth proportional to 703.58, 970.91 and 408.83 is: 564.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.58 : 970.91 = 408.83 : x
  2. Step 2: Convert to fraction form
    703.58/970.91 = 408.83/x
  3. Step 3: Cross multiply
    703.58x = 970.91 × 408.83
  4. Step 4: Simplify right side
    703.58x = 396,937.52
  5. Step 5: Solve for x
    x = 396,937.52/703.58
  6. Step 6: Final answer
    x = 564.17

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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.