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Finding the Fourth Proportional to 324.41, 488.89 and 303.90

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Solution

The fourth proportional to 324.41, 488.89 and 303.90 is: 457.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.41 : 488.89 = 303.90 : x
  2. Step 2: Convert to fraction form
    324.41/488.89 = 303.90/x
  3. Step 3: Cross multiply
    324.41x = 488.89 × 303.90
  4. Step 4: Simplify right side
    324.41x = 148,573.26
  5. Step 5: Solve for x
    x = 148,573.26/324.41
  6. Step 6: Final answer
    x = 457.99

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.