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Finding the Fourth Proportional to 1,266.52, 1,748.54 and 847.48

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Solution

The fourth proportional to 1,266.52, 1,748.54 and 847.48 is: 1,170.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.52 : 1,748.54 = 847.48 : x
  2. Step 2: Convert to fraction form
    1,266.52/1,748.54 = 847.48/x
  3. Step 3: Cross multiply
    1,266.52x = 1,748.54 × 847.48
  4. Step 4: Simplify right side
    1,266.52x = 1,481,852.68
  5. Step 5: Solve for x
    x = 1,481,852.68/1,266.52
  6. Step 6: Final answer
    x = 1,170.02

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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.