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Finding the Fourth Proportional to 1,237.27, 1,707.45 and 677.73

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Solution

The fourth proportional to 1,237.27, 1,707.45 and 677.73 is: 935.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237.27 : 1,707.45 = 677.73 : x
  2. Step 2: Convert to fraction form
    1,237.27/1,707.45 = 677.73/x
  3. Step 3: Cross multiply
    1,237.27x = 1,707.45 × 677.73
  4. Step 4: Simplify right side
    1,237.27x = 1,157,190.09
  5. Step 5: Solve for x
    x = 1,157,190.09/1,237.27
  6. Step 6: Final answer
    x = 935.28

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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.