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Finding the Fourth Proportional to 1,123.36, 1,550.11 and 625.94

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Solution

The fourth proportional to 1,123.36, 1,550.11 and 625.94 is: 863.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123.36 : 1,550.11 = 625.94 : x
  2. Step 2: Convert to fraction form
    1,123.36/1,550.11 = 625.94/x
  3. Step 3: Cross multiply
    1,123.36x = 1,550.11 × 625.94
  4. Step 4: Simplify right side
    1,123.36x = 970,275.85
  5. Step 5: Solve for x
    x = 970,275.85/1,123.36
  6. Step 6: Final answer
    x = 863.73

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1.5x scale

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.