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Finding the Fourth Proportional to 527.07, 727.47 and 439.59

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Solution

The fourth proportional to 527.07, 727.47 and 439.59 is: 606.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.07 : 727.47 = 439.59 : x
  2. Step 2: Convert to fraction form
    527.07/727.47 = 439.59/x
  3. Step 3: Cross multiply
    527.07x = 727.47 × 439.59
  4. Step 4: Simplify right side
    527.07x = 319,788.54
  5. Step 5: Solve for x
    x = 319,788.54/527.07
  6. Step 6: Final answer
    x = 606.73

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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.