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Finding the Fourth Proportional to 1,123.63, 1,550.57 and 626.26

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Solution

The fourth proportional to 1,123.63, 1,550.57 and 626.26 is: 864.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123.63 : 1,550.57 = 626.26 : x
  2. Step 2: Convert to fraction form
    1,123.63/1,550.57 = 626.26/x
  3. Step 3: Cross multiply
    1,123.63x = 1,550.57 × 626.26
  4. Step 4: Simplify right side
    1,123.63x = 971,059.97
  5. Step 5: Solve for x
    x = 971,059.97/1,123.63
  6. Step 6: Final answer
    x = 864.22

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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.