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Finding the Fourth Proportional to 339.98, 510.21 and 195.98

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Solution

The fourth proportional to 339.98, 510.21 and 195.98 is: 294.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.98 : 510.21 = 195.98 : x
  2. Step 2: Convert to fraction form
    339.98/510.21 = 195.98/x
  3. Step 3: Cross multiply
    339.98x = 510.21 × 195.98
  4. Step 4: Simplify right side
    339.98x = 99,990.96
  5. Step 5: Solve for x
    x = 99,990.96/339.98
  6. Step 6: Final answer
    x = 294.11

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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.