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Finding the Fourth Proportional to 617.34, 852.09 and 384.66

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Solution

The fourth proportional to 617.34, 852.09 and 384.66 is: 530.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.34 : 852.09 = 384.66 : x
  2. Step 2: Convert to fraction form
    617.34/852.09 = 384.66/x
  3. Step 3: Cross multiply
    617.34x = 852.09 × 384.66
  4. Step 4: Simplify right side
    617.34x = 327,764.94
  5. Step 5: Solve for x
    x = 327,764.94/617.34
  6. Step 6: Final answer
    x = 530.93

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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.