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Finding the Fourth Proportional to 384.17, 530.07 and 226.77

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Solution

The fourth proportional to 384.17, 530.07 and 226.77 is: 312.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.17 : 530.07 = 226.77 : x
  2. Step 2: Convert to fraction form
    384.17/530.07 = 226.77/x
  3. Step 3: Cross multiply
    384.17x = 530.07 × 226.77
  4. Step 4: Simplify right side
    384.17x = 120,206.25
  5. Step 5: Solve for x
    x = 120,206.25/384.17
  6. Step 6: Final answer
    x = 312.90

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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.