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Finding the Fourth Proportional to 609.43, 841.17 and 347.53

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Solution

The fourth proportional to 609.43, 841.17 and 347.53 is: 479.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.43 : 841.17 = 347.53 : x
  2. Step 2: Convert to fraction form
    609.43/841.17 = 347.53/x
  3. Step 3: Cross multiply
    609.43x = 841.17 × 347.53
  4. Step 4: Simplify right side
    609.43x = 292,331.81
  5. Step 5: Solve for x
    x = 292,331.81/609.43
  6. Step 6: Final answer
    x = 479.68

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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.