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Finding the Fourth Proportional to 469.27, 647.77 and 343.34

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Solution

The fourth proportional to 469.27, 647.77 and 343.34 is: 473.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.27 : 647.77 = 343.34 : x
  2. Step 2: Convert to fraction form
    469.27/647.77 = 343.34/x
  3. Step 3: Cross multiply
    469.27x = 647.77 × 343.34
  4. Step 4: Simplify right side
    469.27x = 222,405.35
  5. Step 5: Solve for x
    x = 222,405.35/469.27
  6. Step 6: Final answer
    x = 473.94

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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.