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Finding the Fourth Proportional to 706.69, 975.32 and 396.19

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Solution

The fourth proportional to 706.69, 975.32 and 396.19 is: 546.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.69 : 975.32 = 396.19 : x
  2. Step 2: Convert to fraction form
    706.69/975.32 = 396.19/x
  3. Step 3: Cross multiply
    706.69x = 975.32 × 396.19
  4. Step 4: Simplify right side
    706.69x = 386,409.10
  5. Step 5: Solve for x
    x = 386,409.10/706.69
  6. Step 6: Final answer
    x = 546.79

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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.