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Finding the Fourth Proportional to 2,331.81, 3,497.74 and 688.37

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Solution

The fourth proportional to 2,331.81, 3,497.74 and 688.37 is: 1,032.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.81 : 3,497.74 = 688.37 : x
  2. Step 2: Convert to fraction form
    2,331.81/3,497.74 = 688.37/x
  3. Step 3: Cross multiply
    2,331.81x = 3,497.74 × 688.37
  4. Step 4: Simplify right side
    2,331.81x = 2,407,720.07
  5. Step 5: Solve for x
    x = 2,407,720.07/2,331.81
  6. Step 6: Final answer
    x = 1,032.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.