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Finding the Fourth Proportional to 353.31, 484.35 and 347.64

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Solution

The fourth proportional to 353.31, 484.35 and 347.64 is: 476.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.31 : 484.35 = 347.64 : x
  2. Step 2: Convert to fraction form
    353.31/484.35 = 347.64/x
  3. Step 3: Cross multiply
    353.31x = 484.35 × 347.64
  4. Step 4: Simplify right side
    353.31x = 168,379.43
  5. Step 5: Solve for x
    x = 168,379.43/353.31
  6. Step 6: Final answer
    x = 476.58

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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.