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Finding the Fourth Proportional to 384.74, 576.99 and 153.55

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Solution

The fourth proportional to 384.74, 576.99 and 153.55 is: 230.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.74 : 576.99 = 153.55 : x
  2. Step 2: Convert to fraction form
    384.74/576.99 = 153.55/x
  3. Step 3: Cross multiply
    384.74x = 576.99 × 153.55
  4. Step 4: Simplify right side
    384.74x = 88,595.37
  5. Step 5: Solve for x
    x = 88,595.37/384.74
  6. Step 6: Final answer
    x = 230.28

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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.