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Finding the Fourth Proportional to 367.68, 507.06 and 318.48

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Solution

The fourth proportional to 367.68, 507.06 and 318.48 is: 439.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.68 : 507.06 = 318.48 : x
  2. Step 2: Convert to fraction form
    367.68/507.06 = 318.48/x
  3. Step 3: Cross multiply
    367.68x = 507.06 × 318.48
  4. Step 4: Simplify right side
    367.68x = 161,488.47
  5. Step 5: Solve for x
    x = 161,488.47/367.68
  6. Step 6: Final answer
    x = 439.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.