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Finding the Fourth Proportional to 352.65, 532.06 and 330.78

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Solution

The fourth proportional to 352.65, 532.06 and 330.78 is: 499.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.65 : 532.06 = 330.78 : x
  2. Step 2: Convert to fraction form
    352.65/532.06 = 330.78/x
  3. Step 3: Cross multiply
    352.65x = 532.06 × 330.78
  4. Step 4: Simplify right side
    352.65x = 175,995.51
  5. Step 5: Solve for x
    x = 175,995.51/352.65
  6. Step 6: Final answer
    x = 499.06

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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.