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Finding the Fourth Proportional to 347, 478.62 and 335.56

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Solution

The fourth proportional to 347, 478.62 and 335.56 is: 462.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    347 : 478.62 = 335.56 : x
  2. Step 2: Convert to fraction form
    347/478.62 = 335.56/x
  3. Step 3: Cross multiply
    347x = 478.62 × 335.56
  4. Step 4: Simplify right side
    347x = 160,604.89
  5. Step 5: Solve for x
    x = 160,604.89/347
  6. Step 6: Final answer
    x = 462.84

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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.