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Finding the Fourth Proportional to 526.52, 788.52 and 439.76

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Solution

The fourth proportional to 526.52, 788.52 and 439.76 is: 658.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.52 : 788.52 = 439.76 : x
  2. Step 2: Convert to fraction form
    526.52/788.52 = 439.76/x
  3. Step 3: Cross multiply
    526.52x = 788.52 × 439.76
  4. Step 4: Simplify right side
    526.52x = 346,759.56
  5. Step 5: Solve for x
    x = 346,759.56/526.52
  6. Step 6: Final answer
    x = 658.59

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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.