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Finding the Fourth Proportional to 1,094.74, 1,634.68 and 961.96

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Solution

The fourth proportional to 1,094.74, 1,634.68 and 961.96 is: 1,436.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,094.74 : 1,634.68 = 961.96 : x
  2. Step 2: Convert to fraction form
    1,094.74/1,634.68 = 961.96/x
  3. Step 3: Cross multiply
    1,094.74x = 1,634.68 × 961.96
  4. Step 4: Simplify right side
    1,094.74x = 1,572,496.77
  5. Step 5: Solve for x
    x = 1,572,496.77/1,094.74
  6. Step 6: Final answer
    x = 1,436.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.