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Finding the Fourth Proportional to 253.04, 379.29 and 144.60

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Solution

The fourth proportional to 253.04, 379.29 and 144.60 is: 216.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.04 : 379.29 = 144.60 : x
  2. Step 2: Convert to fraction form
    253.04/379.29 = 144.60/x
  3. Step 3: Cross multiply
    253.04x = 379.29 × 144.60
  4. Step 4: Simplify right side
    253.04x = 54,845.33
  5. Step 5: Solve for x
    x = 54,845.33/253.04
  6. Step 6: Final answer
    x = 216.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.