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Finding the Fourth Proportional to 611.93, 844.48 and 346.43

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Solution

The fourth proportional to 611.93, 844.48 and 346.43 is: 478.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.93 : 844.48 = 346.43 : x
  2. Step 2: Convert to fraction form
    611.93/844.48 = 346.43/x
  3. Step 3: Cross multiply
    611.93x = 844.48 × 346.43
  4. Step 4: Simplify right side
    611.93x = 292,553.21
  5. Step 5: Solve for x
    x = 292,553.21/611.93
  6. Step 6: Final answer
    x = 478.08

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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.