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Finding the Fourth Proportional to 373.96, 561.18 and 211.96

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Solution

The fourth proportional to 373.96, 561.18 and 211.96 is: 318.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.96 : 561.18 = 211.96 : x
  2. Step 2: Convert to fraction form
    373.96/561.18 = 211.96/x
  3. Step 3: Cross multiply
    373.96x = 561.18 × 211.96
  4. Step 4: Simplify right side
    373.96x = 118,947.71
  5. Step 5: Solve for x
    x = 118,947.71/373.96
  6. Step 6: Final answer
    x = 318.08

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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.