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Finding the Fourth Proportional to 706.14, 974.46 and 395.64

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Solution

The fourth proportional to 706.14, 974.46 and 395.64 is: 545.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.14 : 974.46 = 395.64 : x
  2. Step 2: Convert to fraction form
    706.14/974.46 = 395.64/x
  3. Step 3: Cross multiply
    706.14x = 974.46 × 395.64
  4. Step 4: Simplify right side
    706.14x = 385,535.35
  5. Step 5: Solve for x
    x = 385,535.35/706.14
  6. Step 6: Final answer
    x = 545.98

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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.