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Finding the Fourth Proportional to 1,323.95, 1,827.90 and 827.33

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Solution

The fourth proportional to 1,323.95, 1,827.90 and 827.33 is: 1,142.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.95 : 1,827.90 = 827.33 : x
  2. Step 2: Convert to fraction form
    1,323.95/1,827.90 = 827.33/x
  3. Step 3: Cross multiply
    1,323.95x = 1,827.90 × 827.33
  4. Step 4: Simplify right side
    1,323.95x = 1,512,267.37
  5. Step 5: Solve for x
    x = 1,512,267.37/1,323.95
  6. Step 6: Final answer
    x = 1,142.24

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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.