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Finding the Fourth Proportional to 309.32, 427.03 and 204.37

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Solution

The fourth proportional to 309.32, 427.03 and 204.37 is: 282.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    309.32 : 427.03 = 204.37 : x
  2. Step 2: Convert to fraction form
    309.32/427.03 = 204.37/x
  3. Step 3: Cross multiply
    309.32x = 427.03 × 204.37
  4. Step 4: Simplify right side
    309.32x = 87,274.38
  5. Step 5: Solve for x
    x = 87,274.38/309.32
  6. Step 6: Final answer
    x = 282.15

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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.