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Finding the Fourth Proportional to 347.50, 519.21 and 335.39

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Solution

The fourth proportional to 347.50, 519.21 and 335.39 is: 501.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.50 : 519.21 = 335.39 : x
  2. Step 2: Convert to fraction form
    347.50/519.21 = 335.39/x
  3. Step 3: Cross multiply
    347.50x = 519.21 × 335.39
  4. Step 4: Simplify right side
    347.50x = 174,139.42
  5. Step 5: Solve for x
    x = 174,139.42/347.50
  6. Step 6: Final answer
    x = 501.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.