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Finding the Fourth Proportional to 579.94, 800.15 and 347.02

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Solution

The fourth proportional to 579.94, 800.15 and 347.02 is: 478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.94 : 800.15 = 347.02 : x
  2. Step 2: Convert to fraction form
    579.94/800.15 = 347.02/x
  3. Step 3: Cross multiply
    579.94x = 800.15 × 347.02
  4. Step 4: Simplify right side
    579.94x = 277,668.05
  5. Step 5: Solve for x
    x = 277,668.05/579.94
  6. Step 6: Final answer
    x = 478.79

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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.