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Finding the Fourth Proportional to 473.23, 709.85 and 290.44

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Solution

The fourth proportional to 473.23, 709.85 and 290.44 is: 435.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.23 : 709.85 = 290.44 : x
  2. Step 2: Convert to fraction form
    473.23/709.85 = 290.44/x
  3. Step 3: Cross multiply
    473.23x = 709.85 × 290.44
  4. Step 4: Simplify right side
    473.23x = 206,168.83
  5. Step 5: Solve for x
    x = 206,168.83/473.23
  6. Step 6: Final answer
    x = 435.66

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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.