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Finding the Fourth Proportional to 857.48, 1,183.14 and 547.04

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Solution

The fourth proportional to 857.48, 1,183.14 and 547.04 is: 754.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    857.48 : 1,183.14 = 547.04 : x
  2. Step 2: Convert to fraction form
    857.48/1,183.14 = 547.04/x
  3. Step 3: Cross multiply
    857.48x = 1,183.14 × 547.04
  4. Step 4: Simplify right side
    857.48x = 647,224.91
  5. Step 5: Solve for x
    x = 647,224.91/857.48
  6. Step 6: Final answer
    x = 754.80

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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.