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Finding the Fourth Proportional to 473.14, 709.56 and 290.59

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Solution

The fourth proportional to 473.14, 709.56 and 290.59 is: 435.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.14 : 709.56 = 290.59 : x
  2. Step 2: Convert to fraction form
    473.14/709.56 = 290.59/x
  3. Step 3: Cross multiply
    473.14x = 709.56 × 290.59
  4. Step 4: Simplify right side
    473.14x = 206,189.27
  5. Step 5: Solve for x
    x = 206,189.27/473.14
  6. Step 6: Final answer
    x = 435.79

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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.