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Finding the Fourth Proportional to 849.12, 1,274.07 and 503.14

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Solution

The fourth proportional to 849.12, 1,274.07 and 503.14 is: 754.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.12 : 1,274.07 = 503.14 : x
  2. Step 2: Convert to fraction form
    849.12/1,274.07 = 503.14/x
  3. Step 3: Cross multiply
    849.12x = 1,274.07 × 503.14
  4. Step 4: Simplify right side
    849.12x = 641,035.58
  5. Step 5: Solve for x
    x = 641,035.58/849.12
  6. Step 6: Final answer
    x = 754.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.