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Finding the Fourth Proportional to 693.96, 957.96 and 414.28

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Solution

The fourth proportional to 693.96, 957.96 and 414.28 is: 571.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.96 : 957.96 = 414.28 : x
  2. Step 2: Convert to fraction form
    693.96/957.96 = 414.28/x
  3. Step 3: Cross multiply
    693.96x = 957.96 × 414.28
  4. Step 4: Simplify right side
    693.96x = 396,863.67
  5. Step 5: Solve for x
    x = 396,863.67/693.96
  6. Step 6: Final answer
    x = 571.88

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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.