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Finding the Fourth Proportional to 841.39, 1,161.07 and 579.43

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Solution

The fourth proportional to 841.39, 1,161.07 and 579.43 is: 799.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.39 : 1,161.07 = 579.43 : x
  2. Step 2: Convert to fraction form
    841.39/1,161.07 = 579.43/x
  3. Step 3: Cross multiply
    841.39x = 1,161.07 × 579.43
  4. Step 4: Simplify right side
    841.39x = 672,758.79
  5. Step 5: Solve for x
    x = 672,758.79/841.39
  6. Step 6: Final answer
    x = 799.58

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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.