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Finding the Fourth Proportional to 1,079.23, 1,618.63 and 494.07

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Solution

The fourth proportional to 1,079.23, 1,618.63 and 494.07 is: 741.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.23 : 1,618.63 = 494.07 : x
  2. Step 2: Convert to fraction form
    1,079.23/1,618.63 = 494.07/x
  3. Step 3: Cross multiply
    1,079.23x = 1,618.63 × 494.07
  4. Step 4: Simplify right side
    1,079.23x = 799,716.52
  5. Step 5: Solve for x
    x = 799,716.52/1,079.23
  6. Step 6: Final answer
    x = 741.01

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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.