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Finding the Fourth Proportional to 507.95, 759.96 and 445.76

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Solution

The fourth proportional to 507.95, 759.96 and 445.76 is: 666.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.95 : 759.96 = 445.76 : x
  2. Step 2: Convert to fraction form
    507.95/759.96 = 445.76/x
  3. Step 3: Cross multiply
    507.95x = 759.96 × 445.76
  4. Step 4: Simplify right side
    507.95x = 338,760.92
  5. Step 5: Solve for x
    x = 338,760.92/507.95
  6. Step 6: Final answer
    x = 666.91

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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.