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Finding the Fourth Proportional to 1,306.94, 1,803.67 and 1,227.76

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Solution

The fourth proportional to 1,306.94, 1,803.67 and 1,227.76 is: 1,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.94 : 1,803.67 = 1,227.76 : x
  2. Step 2: Convert to fraction form
    1,306.94/1,803.67 = 1,227.76/x
  3. Step 3: Cross multiply
    1,306.94x = 1,803.67 × 1,227.76
  4. Step 4: Simplify right side
    1,306.94x = 2,214,466.30
  5. Step 5: Solve for x
    x = 2,214,466.30/1,306.94
  6. Step 6: Final answer
    x = 1,694.40

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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.