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Finding the Fourth Proportional to 330.48, 498.61 and 329.57

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Solution

The fourth proportional to 330.48, 498.61 and 329.57 is: 497.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.48 : 498.61 = 329.57 : x
  2. Step 2: Convert to fraction form
    330.48/498.61 = 329.57/x
  3. Step 3: Cross multiply
    330.48x = 498.61 × 329.57
  4. Step 4: Simplify right side
    330.48x = 164,324.83
  5. Step 5: Solve for x
    x = 164,324.83/330.48
  6. Step 6: Final answer
    x = 497.23

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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.