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Finding the Fourth Proportional to 331.04, 456.24 and 253.60

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Solution

The fourth proportional to 331.04, 456.24 and 253.60 is: 349.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.04 : 456.24 = 253.60 : x
  2. Step 2: Convert to fraction form
    331.04/456.24 = 253.60/x
  3. Step 3: Cross multiply
    331.04x = 456.24 × 253.60
  4. Step 4: Simplify right side
    331.04x = 115,702.46
  5. Step 5: Solve for x
    x = 115,702.46/331.04
  6. Step 6: Final answer
    x = 349.51

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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.