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Finding the Fourth Proportional to 284.64, 426.34 and 187.03

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Solution

The fourth proportional to 284.64, 426.34 and 187.03 is: 280.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.64 : 426.34 = 187.03 : x
  2. Step 2: Convert to fraction form
    284.64/426.34 = 187.03/x
  3. Step 3: Cross multiply
    284.64x = 426.34 × 187.03
  4. Step 4: Simplify right side
    284.64x = 79,738.37
  5. Step 5: Solve for x
    x = 79,738.37/284.64
  6. Step 6: Final answer
    x = 280.14

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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.