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Finding the Fourth Proportional to 519.63, 718.05 and 426.33

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Solution

The fourth proportional to 519.63, 718.05 and 426.33 is: 589.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.63 : 718.05 = 426.33 : x
  2. Step 2: Convert to fraction form
    519.63/718.05 = 426.33/x
  3. Step 3: Cross multiply
    519.63x = 718.05 × 426.33
  4. Step 4: Simplify right side
    519.63x = 306,126.26
  5. Step 5: Solve for x
    x = 306,126.26/519.63
  6. Step 6: Final answer
    x = 589.12

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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.