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Finding the Fourth Proportional to 706.50, 976.79 and 675.90

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Solution

The fourth proportional to 706.50, 976.79 and 675.90 is: 934.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.50 : 976.79 = 675.90 : x
  2. Step 2: Convert to fraction form
    706.50/976.79 = 675.90/x
  3. Step 3: Cross multiply
    706.50x = 976.79 × 675.90
  4. Step 4: Simplify right side
    706.50x = 660,214.05
  5. Step 5: Solve for x
    x = 660,214.05/706.50
  6. Step 6: Final answer
    x = 934.49

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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.