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Finding the Fourth Proportional to 324.98, 487.40 and 151.46

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Solution

The fourth proportional to 324.98, 487.40 and 151.46 is: 227.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.98 : 487.40 = 151.46 : x
  2. Step 2: Convert to fraction form
    324.98/487.40 = 151.46/x
  3. Step 3: Cross multiply
    324.98x = 487.40 × 151.46
  4. Step 4: Simplify right side
    324.98x = 73,818.41
  5. Step 5: Solve for x
    x = 73,818.41/324.98
  6. Step 6: Final answer
    x = 227.15

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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.