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Finding the Fourth Proportional to 367.71, 507.60 and 257.19

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Solution

The fourth proportional to 367.71, 507.60 and 257.19 is: 355.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.71 : 507.60 = 257.19 : x
  2. Step 2: Convert to fraction form
    367.71/507.60 = 257.19/x
  3. Step 3: Cross multiply
    367.71x = 507.60 × 257.19
  4. Step 4: Simplify right side
    367.71x = 130,549.64
  5. Step 5: Solve for x
    x = 130,549.64/367.71
  6. Step 6: Final answer
    x = 355.03

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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.