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Finding the Fourth Proportional to 370.85, 556.61 and 197.66

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Solution

The fourth proportional to 370.85, 556.61 and 197.66 is: 296.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.85 : 556.61 = 197.66 : x
  2. Step 2: Convert to fraction form
    370.85/556.61 = 197.66/x
  3. Step 3: Cross multiply
    370.85x = 556.61 × 197.66
  4. Step 4: Simplify right side
    370.85x = 110,019.04
  5. Step 5: Solve for x
    x = 110,019.04/370.85
  6. Step 6: Final answer
    x = 296.67

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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.