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Finding the Fourth Proportional to 358.47, 535.14 and 327.69

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Solution

The fourth proportional to 358.47, 535.14 and 327.69 is: 489.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.47 : 535.14 = 327.69 : x
  2. Step 2: Convert to fraction form
    358.47/535.14 = 327.69/x
  3. Step 3: Cross multiply
    358.47x = 535.14 × 327.69
  4. Step 4: Simplify right side
    358.47x = 175,360.03
  5. Step 5: Solve for x
    x = 175,360.03/358.47
  6. Step 6: Final answer
    x = 489.19

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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.