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Finding the Fourth Proportional to 367.53, 507.43 and 318.93

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Solution

The fourth proportional to 367.53, 507.43 and 318.93 is: 440.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.53 : 507.43 = 318.93 : x
  2. Step 2: Convert to fraction form
    367.53/507.43 = 318.93/x
  3. Step 3: Cross multiply
    367.53x = 507.43 × 318.93
  4. Step 4: Simplify right side
    367.53x = 161,834.65
  5. Step 5: Solve for x
    x = 161,834.65/367.53
  6. Step 6: Final answer
    x = 440.33

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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.