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Finding the Fourth Proportional to 527.05, 788.55 and 344.80

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Solution

The fourth proportional to 527.05, 788.55 and 344.80 is: 515.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.05 : 788.55 = 344.80 : x
  2. Step 2: Convert to fraction form
    527.05/788.55 = 344.80/x
  3. Step 3: Cross multiply
    527.05x = 788.55 × 344.80
  4. Step 4: Simplify right side
    527.05x = 271,892.04
  5. Step 5: Solve for x
    x = 271,892.04/527.05
  6. Step 6: Final answer
    x = 515.88

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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.