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Finding the Fourth Proportional to 507.15, 762.12 and 301.76

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Solution

The fourth proportional to 507.15, 762.12 and 301.76 is: 453.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.15 : 762.12 = 301.76 : x
  2. Step 2: Convert to fraction form
    507.15/762.12 = 301.76/x
  3. Step 3: Cross multiply
    507.15x = 762.12 × 301.76
  4. Step 4: Simplify right side
    507.15x = 229,977.33
  5. Step 5: Solve for x
    x = 229,977.33/507.15
  6. Step 6: Final answer
    x = 453.47

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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.