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Finding the Fourth Proportional to 829.32, 1,143.25 and 579.86

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Solution

The fourth proportional to 829.32, 1,143.25 and 579.86 is: 799.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    829.32 : 1,143.25 = 579.86 : x
  2. Step 2: Convert to fraction form
    829.32/1,143.25 = 579.86/x
  3. Step 3: Cross multiply
    829.32x = 1,143.25 × 579.86
  4. Step 4: Simplify right side
    829.32x = 662,922.05
  5. Step 5: Solve for x
    x = 662,922.05/829.32
  6. Step 6: Final answer
    x = 799.36

Related Problems

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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.