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Finding the Fourth Proportional to 339.72, 510 and 248.52

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Solution

The fourth proportional to 339.72, 510 and 248.52 is: 373.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.72 : 510 = 248.52 : x
  2. Step 2: Convert to fraction form
    339.72/510 = 248.52/x
  3. Step 3: Cross multiply
    339.72x = 510 × 248.52
  4. Step 4: Simplify right side
    339.72x = 126,745.20
  5. Step 5: Solve for x
    x = 126,745.20/339.72
  6. Step 6: Final answer
    x = 373.09

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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.