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Finding the Fourth Proportional to 356.99, 535.28 and 192.65

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Solution

The fourth proportional to 356.99, 535.28 and 192.65 is: 288.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.99 : 535.28 = 192.65 : x
  2. Step 2: Convert to fraction form
    356.99/535.28 = 192.65/x
  3. Step 3: Cross multiply
    356.99x = 535.28 × 192.65
  4. Step 4: Simplify right side
    356.99x = 103,121.69
  5. Step 5: Solve for x
    x = 103,121.69/356.99
  6. Step 6: Final answer
    x = 288.86

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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.