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Finding the Fourth Proportional to 283.38, 424.80 and 153.30

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Solution

The fourth proportional to 283.38, 424.80 and 153.30 is: 229.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.38 : 424.80 = 153.30 : x
  2. Step 2: Convert to fraction form
    283.38/424.80 = 153.30/x
  3. Step 3: Cross multiply
    283.38x = 424.80 × 153.30
  4. Step 4: Simplify right side
    283.38x = 65,121.84
  5. Step 5: Solve for x
    x = 65,121.84/283.38
  6. Step 6: Final answer
    x = 229.80

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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.