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Finding the Fourth Proportional to 389.62, 584 and 158.44

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Solution

The fourth proportional to 389.62, 584 and 158.44 is: 237.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.62 : 584 = 158.44 : x
  2. Step 2: Convert to fraction form
    389.62/584 = 158.44/x
  3. Step 3: Cross multiply
    389.62x = 584 × 158.44
  4. Step 4: Simplify right side
    389.62x = 92,528.96
  5. Step 5: Solve for x
    x = 92,528.96/389.62
  6. Step 6: Final answer
    x = 237.49

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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.