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Finding the Fourth Proportional to 507.18, 762.21 and 301.80

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Solution

The fourth proportional to 507.18, 762.21 and 301.80 is: 453.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.18 : 762.21 = 301.80 : x
  2. Step 2: Convert to fraction form
    507.18/762.21 = 301.80/x
  3. Step 3: Cross multiply
    507.18x = 762.21 × 301.80
  4. Step 4: Simplify right side
    507.18x = 230,034.98
  5. Step 5: Solve for x
    x = 230,034.98/507.18
  6. Step 6: Final answer
    x = 453.56

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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.