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Finding the Fourth Proportional to 1,227.64, 1,694.19 and 703.77

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Solution

The fourth proportional to 1,227.64, 1,694.19 and 703.77 is: 971.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.64 : 1,694.19 = 703.77 : x
  2. Step 2: Convert to fraction form
    1,227.64/1,694.19 = 703.77/x
  3. Step 3: Cross multiply
    1,227.64x = 1,694.19 × 703.77
  4. Step 4: Simplify right side
    1,227.64x = 1,192,326.45
  5. Step 5: Solve for x
    x = 1,192,326.45/1,227.64
  6. Step 6: Final answer
    x = 971.23

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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.