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Finding the Fourth Proportional to 185.40, 276.89 and 154.98

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Solution

The fourth proportional to 185.40, 276.89 and 154.98 is: 231.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.40 : 276.89 = 154.98 : x
  2. Step 2: Convert to fraction form
    185.40/276.89 = 154.98/x
  3. Step 3: Cross multiply
    185.40x = 276.89 × 154.98
  4. Step 4: Simplify right side
    185.40x = 42,911.64
  5. Step 5: Solve for x
    x = 42,911.64/185.40
  6. Step 6: Final answer
    x = 231.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.