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Finding the Fourth Proportional to 1,201.02, 1,658.98 and 827.36

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Solution

The fourth proportional to 1,201.02, 1,658.98 and 827.36 is: 1,142.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201.02 : 1,658.98 = 827.36 : x
  2. Step 2: Convert to fraction form
    1,201.02/1,658.98 = 827.36/x
  3. Step 3: Cross multiply
    1,201.02x = 1,658.98 × 827.36
  4. Step 4: Simplify right side
    1,201.02x = 1,372,573.69
  5. Step 5: Solve for x
    x = 1,372,573.69/1,201.02
  6. Step 6: Final answer
    x = 1,142.84

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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.