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Finding the Fourth Proportional to 339.53, 508.94 and 144.48

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Solution

The fourth proportional to 339.53, 508.94 and 144.48 is: 216.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.53 : 508.94 = 144.48 : x
  2. Step 2: Convert to fraction form
    339.53/508.94 = 144.48/x
  3. Step 3: Cross multiply
    339.53x = 508.94 × 144.48
  4. Step 4: Simplify right side
    339.53x = 73,532.20
  5. Step 5: Solve for x
    x = 73,532.20/339.53
  6. Step 6: Final answer
    x = 216.57

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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.