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Finding the Fourth Proportional to 507.39, 759.54 and 324.91

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Solution

The fourth proportional to 507.39, 759.54 and 324.91 is: 486.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.39 : 759.54 = 324.91 : x
  2. Step 2: Convert to fraction form
    507.39/759.54 = 324.91/x
  3. Step 3: Cross multiply
    507.39x = 759.54 × 324.91
  4. Step 4: Simplify right side
    507.39x = 246,784.85
  5. Step 5: Solve for x
    x = 246,784.85/507.39
  6. Step 6: Final answer
    x = 486.38

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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.