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Finding the Fourth Proportional to 370.36, 555.09 and 153.73

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Solution

The fourth proportional to 370.36, 555.09 and 153.73 is: 230.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.36 : 555.09 = 153.73 : x
  2. Step 2: Convert to fraction form
    370.36/555.09 = 153.73/x
  3. Step 3: Cross multiply
    370.36x = 555.09 × 153.73
  4. Step 4: Simplify right side
    370.36x = 85,333.99
  5. Step 5: Solve for x
    x = 85,333.99/370.36
  6. Step 6: Final answer
    x = 230.41

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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.