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Finding the Fourth Proportional to 367.85, 507.25 and 257.29

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Solution

The fourth proportional to 367.85, 507.25 and 257.29 is: 354.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.85 : 507.25 = 257.29 : x
  2. Step 2: Convert to fraction form
    367.85/507.25 = 257.29/x
  3. Step 3: Cross multiply
    367.85x = 507.25 × 257.29
  4. Step 4: Simplify right side
    367.85x = 130,510.35
  5. Step 5: Solve for x
    x = 130,510.35/367.85
  6. Step 6: Final answer
    x = 354.79

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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.