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Finding the Fourth Proportional to 370.22, 556.13 and 316.76

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Solution

The fourth proportional to 370.22, 556.13 and 316.76 is: 475.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.22 : 556.13 = 316.76 : x
  2. Step 2: Convert to fraction form
    370.22/556.13 = 316.76/x
  3. Step 3: Cross multiply
    370.22x = 556.13 × 316.76
  4. Step 4: Simplify right side
    370.22x = 176,157.75
  5. Step 5: Solve for x
    x = 176,157.75/370.22
  6. Step 6: Final answer
    x = 475.83

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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.