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Finding the Fourth Proportional to 339.88, 510.06 and 131.84

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Solution

The fourth proportional to 339.88, 510.06 and 131.84 is: 197.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.88 : 510.06 = 131.84 : x
  2. Step 2: Convert to fraction form
    339.88/510.06 = 131.84/x
  3. Step 3: Cross multiply
    339.88x = 510.06 × 131.84
  4. Step 4: Simplify right side
    339.88x = 67,246.31
  5. Step 5: Solve for x
    x = 67,246.31/339.88
  6. Step 6: Final answer
    x = 197.85

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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.