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Finding the Fourth Proportional to 849.43, 1,273.67 and 479.08

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Solution

The fourth proportional to 849.43, 1,273.67 and 479.08 is: 718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.43 : 1,273.67 = 479.08 : x
  2. Step 2: Convert to fraction form
    849.43/1,273.67 = 479.08/x
  3. Step 3: Cross multiply
    849.43x = 1,273.67 × 479.08
  4. Step 4: Simplify right side
    849.43x = 610,189.82
  5. Step 5: Solve for x
    x = 610,189.82/849.43
  6. Step 6: Final answer
    x = 718.35

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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.