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Finding the Fourth Proportional to 1,123.02, 1,549.97 and 650.85

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Solution

The fourth proportional to 1,123.02, 1,549.97 and 650.85 is: 898.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123.02 : 1,549.97 = 650.85 : x
  2. Step 2: Convert to fraction form
    1,123.02/1,549.97 = 650.85/x
  3. Step 3: Cross multiply
    1,123.02x = 1,549.97 × 650.85
  4. Step 4: Simplify right side
    1,123.02x = 1,008,791.35
  5. Step 5: Solve for x
    x = 1,008,791.35/1,123.02
  6. Step 6: Final answer
    x = 898.28

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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.