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Finding the Fourth Proportional to 370.35, 555.39 and 153.81

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Solution

The fourth proportional to 370.35, 555.39 and 153.81 is: 230.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.35 : 555.39 = 153.81 : x
  2. Step 2: Convert to fraction form
    370.35/555.39 = 153.81/x
  3. Step 3: Cross multiply
    370.35x = 555.39 × 153.81
  4. Step 4: Simplify right side
    370.35x = 85,424.54
  5. Step 5: Solve for x
    x = 85,424.54/370.35
  6. Step 6: Final answer
    x = 230.66

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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.