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Finding the Fourth Proportional to 431.10, 594.46 and 347.87

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Solution

The fourth proportional to 431.10, 594.46 and 347.87 is: 479.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.10 : 594.46 = 347.87 : x
  2. Step 2: Convert to fraction form
    431.10/594.46 = 347.87/x
  3. Step 3: Cross multiply
    431.10x = 594.46 × 347.87
  4. Step 4: Simplify right side
    431.10x = 206,794.80
  5. Step 5: Solve for x
    x = 206,794.80/431.10
  6. Step 6: Final answer
    x = 479.69

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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.