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Finding the Fourth Proportional to 706.50, 974.91 and 411.75

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Solution

The fourth proportional to 706.50, 974.91 and 411.75 is: 568.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.50 : 974.91 = 411.75 : x
  2. Step 2: Convert to fraction form
    706.50/974.91 = 411.75/x
  3. Step 3: Cross multiply
    706.50x = 974.91 × 411.75
  4. Step 4: Simplify right side
    706.50x = 401,419.19
  5. Step 5: Solve for x
    x = 401,419.19/706.50
  6. Step 6: Final answer
    x = 568.18

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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.