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Finding the Fourth Proportional to 1,331.32, 1,835.92 and 833.32

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Solution

The fourth proportional to 1,331.32, 1,835.92 and 833.32 is: 1,149.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.32 : 1,835.92 = 833.32 : x
  2. Step 2: Convert to fraction form
    1,331.32/1,835.92 = 833.32/x
  3. Step 3: Cross multiply
    1,331.32x = 1,835.92 × 833.32
  4. Step 4: Simplify right side
    1,331.32x = 1,529,908.85
  5. Step 5: Solve for x
    x = 1,529,908.85/1,331.32
  6. Step 6: Final answer
    x = 1,149.17

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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.