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Finding the Fourth Proportional to 833.61, 1,150.09 and 518.69

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Solution

The fourth proportional to 833.61, 1,150.09 and 518.69 is: 715.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.61 : 1,150.09 = 518.69 : x
  2. Step 2: Convert to fraction form
    833.61/1,150.09 = 518.69/x
  3. Step 3: Cross multiply
    833.61x = 1,150.09 × 518.69
  4. Step 4: Simplify right side
    833.61x = 596,540.18
  5. Step 5: Solve for x
    x = 596,540.18/833.61
  6. Step 6: Final answer
    x = 715.61

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Double scale
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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.