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Finding the Fourth Proportional to 473.13, 709.92 and 290.43

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Solution

The fourth proportional to 473.13, 709.92 and 290.43 is: 435.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.13 : 709.92 = 290.43 : x
  2. Step 2: Convert to fraction form
    473.13/709.92 = 290.43/x
  3. Step 3: Cross multiply
    473.13x = 709.92 × 290.43
  4. Step 4: Simplify right side
    473.13x = 206,182.07
  5. Step 5: Solve for x
    x = 206,182.07/473.13
  6. Step 6: Final answer
    x = 435.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.