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Finding the Fourth Proportional to 540.21, 808.59 and 344.52

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Solution

The fourth proportional to 540.21, 808.59 and 344.52 is: 515.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.21 : 808.59 = 344.52 : x
  2. Step 2: Convert to fraction form
    540.21/808.59 = 344.52/x
  3. Step 3: Cross multiply
    540.21x = 808.59 × 344.52
  4. Step 4: Simplify right side
    540.21x = 278,575.43
  5. Step 5: Solve for x
    x = 278,575.43/540.21
  6. Step 6: Final answer
    x = 515.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.