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Finding the Fourth Proportional to 343.43, 473.79 and 210.54

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Solution

The fourth proportional to 343.43, 473.79 and 210.54 is: 290.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.43 : 473.79 = 210.54 : x
  2. Step 2: Convert to fraction form
    343.43/473.79 = 210.54/x
  3. Step 3: Cross multiply
    343.43x = 473.79 × 210.54
  4. Step 4: Simplify right side
    343.43x = 99,751.75
  5. Step 5: Solve for x
    x = 99,751.75/343.43
  6. Step 6: Final answer
    x = 290.46

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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.