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Finding the Fourth Proportional to 507.31, 759.44 and 324.45

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Solution

The fourth proportional to 507.31, 759.44 and 324.45 is: 485.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.31 : 759.44 = 324.45 : x
  2. Step 2: Convert to fraction form
    507.31/759.44 = 324.45/x
  3. Step 3: Cross multiply
    507.31x = 759.44 × 324.45
  4. Step 4: Simplify right side
    507.31x = 246,401.12
  5. Step 5: Solve for x
    x = 246,401.12/507.31
  6. Step 6: Final answer
    x = 485.70

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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.