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Finding the Fourth Proportional to 690.43, 950.02 and 674.03

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Solution

The fourth proportional to 690.43, 950.02 and 674.03 is: 927.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.43 : 950.02 = 674.03 : x
  2. Step 2: Convert to fraction form
    690.43/950.02 = 674.03/x
  3. Step 3: Cross multiply
    690.43x = 950.02 × 674.03
  4. Step 4: Simplify right side
    690.43x = 640,341.98
  5. Step 5: Solve for x
    x = 640,341.98/690.43
  6. Step 6: Final answer
    x = 927.45

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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.