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Finding the Fourth Proportional to 1,761.69, 2,431.02 and 964.98

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Solution

The fourth proportional to 1,761.69, 2,431.02 and 964.98 is: 1,331.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.69 : 2,431.02 = 964.98 : x
  2. Step 2: Convert to fraction form
    1,761.69/2,431.02 = 964.98/x
  3. Step 3: Cross multiply
    1,761.69x = 2,431.02 × 964.98
  4. Step 4: Simplify right side
    1,761.69x = 2,345,885.68
  5. Step 5: Solve for x
    x = 2,345,885.68/1,761.69
  6. Step 6: Final answer
    x = 1,331.61

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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.