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Finding the Fourth Proportional to 943.06, 1,301.06 and 611.68

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Solution

The fourth proportional to 943.06, 1,301.06 and 611.68 is: 843.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.06 : 1,301.06 = 611.68 : x
  2. Step 2: Convert to fraction form
    943.06/1,301.06 = 611.68/x
  3. Step 3: Cross multiply
    943.06x = 1,301.06 × 611.68
  4. Step 4: Simplify right side
    943.06x = 795,832.38
  5. Step 5: Solve for x
    x = 795,832.38/943.06
  6. Step 6: Final answer
    x = 843.88

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Double scale
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1.5x scale

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.