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Finding the Fourth Proportional to 337.50, 465.12 and 311.36

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Solution

The fourth proportional to 337.50, 465.12 and 311.36 is: 429.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.50 : 465.12 = 311.36 : x
  2. Step 2: Convert to fraction form
    337.50/465.12 = 311.36/x
  3. Step 3: Cross multiply
    337.50x = 465.12 × 311.36
  4. Step 4: Simplify right side
    337.50x = 144,817.44
  5. Step 5: Solve for x
    x = 144,817.44/337.50
  6. Step 6: Final answer
    x = 429.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.