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Finding the Fourth Proportional to 688.84, 950.61 and 374.11

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Solution

The fourth proportional to 688.84, 950.61 and 374.11 is: 516.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.84 : 950.61 = 374.11 : x
  2. Step 2: Convert to fraction form
    688.84/950.61 = 374.11/x
  3. Step 3: Cross multiply
    688.84x = 950.61 × 374.11
  4. Step 4: Simplify right side
    688.84x = 355,626.08
  5. Step 5: Solve for x
    x = 355,626.08/688.84
  6. Step 6: Final answer
    x = 516.27

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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.