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Finding the Fourth Proportional to 706.12, 974.36 and 391.34

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Solution

The fourth proportional to 706.12, 974.36 and 391.34 is: 540.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.12 : 974.36 = 391.34 : x
  2. Step 2: Convert to fraction form
    706.12/974.36 = 391.34/x
  3. Step 3: Cross multiply
    706.12x = 974.36 × 391.34
  4. Step 4: Simplify right side
    706.12x = 381,302.15
  5. Step 5: Solve for x
    x = 381,302.15/706.12
  6. Step 6: Final answer
    x = 540.00

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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.