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Finding the Fourth Proportional to 384.13, 530.22 and 226.75

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Solution

The fourth proportional to 384.13, 530.22 and 226.75 is: 312.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.13 : 530.22 = 226.75 : x
  2. Step 2: Convert to fraction form
    384.13/530.22 = 226.75/x
  3. Step 3: Cross multiply
    384.13x = 530.22 × 226.75
  4. Step 4: Simplify right side
    384.13x = 120,227.39
  5. Step 5: Solve for x
    x = 120,227.39/384.13
  6. Step 6: Final answer
    x = 312.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.