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Finding the Fourth Proportional to 521.43, 719.09 and 334.59

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Solution

The fourth proportional to 521.43, 719.09 and 334.59 is: 461.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.43 : 719.09 = 334.59 : x
  2. Step 2: Convert to fraction form
    521.43/719.09 = 334.59/x
  3. Step 3: Cross multiply
    521.43x = 719.09 × 334.59
  4. Step 4: Simplify right side
    521.43x = 240,600.32
  5. Step 5: Solve for x
    x = 240,600.32/521.43
  6. Step 6: Final answer
    x = 461.42

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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.