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Finding the Fourth Proportional to 367.75, 507.49 and 257.18

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Solution

The fourth proportional to 367.75, 507.49 and 257.18 is: 354.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.75 : 507.49 = 257.18 : x
  2. Step 2: Convert to fraction form
    367.75/507.49 = 257.18/x
  3. Step 3: Cross multiply
    367.75x = 507.49 × 257.18
  4. Step 4: Simplify right side
    367.75x = 130,516.90
  5. Step 5: Solve for x
    x = 130,516.90/367.75
  6. Step 6: Final answer
    x = 354.91

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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.