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Finding the Fourth Proportional to 353.05, 482.90 and 347.38

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Solution

The fourth proportional to 353.05, 482.90 and 347.38 is: 475.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.05 : 482.90 = 347.38 : x
  2. Step 2: Convert to fraction form
    353.05/482.90 = 347.38/x
  3. Step 3: Cross multiply
    353.05x = 482.90 × 347.38
  4. Step 4: Simplify right side
    353.05x = 167,746.86
  5. Step 5: Solve for x
    x = 167,746.86/353.05
  6. Step 6: Final answer
    x = 475.14

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.