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Finding the Fourth Proportional to 558.36, 833.32 and 543.78

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Solution

The fourth proportional to 558.36, 833.32 and 543.78 is: 811.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.36 : 833.32 = 543.78 : x
  2. Step 2: Convert to fraction form
    558.36/833.32 = 543.78/x
  3. Step 3: Cross multiply
    558.36x = 833.32 × 543.78
  4. Step 4: Simplify right side
    558.36x = 453,143.43
  5. Step 5: Solve for x
    x = 453,143.43/558.36
  6. Step 6: Final answer
    x = 811.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.