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Finding the Fourth Proportional to 283.34, 425.16 and 100.80

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Solution

The fourth proportional to 283.34, 425.16 and 100.80 is: 151.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.34 : 425.16 = 100.80 : x
  2. Step 2: Convert to fraction form
    283.34/425.16 = 100.80/x
  3. Step 3: Cross multiply
    283.34x = 425.16 × 100.80
  4. Step 4: Simplify right side
    283.34x = 42,856.13
  5. Step 5: Solve for x
    x = 42,856.13/283.34
  6. Step 6: Final answer
    x = 151.25

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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.