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Finding the Fourth Proportional to 324.99, 484.97 and 290.38

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Solution

The fourth proportional to 324.99, 484.97 and 290.38 is: 433.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.99 : 484.97 = 290.38 : x
  2. Step 2: Convert to fraction form
    324.99/484.97 = 290.38/x
  3. Step 3: Cross multiply
    324.99x = 484.97 × 290.38
  4. Step 4: Simplify right side
    324.99x = 140,823.16
  5. Step 5: Solve for x
    x = 140,823.16/324.99
  6. Step 6: Final answer
    x = 433.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.