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Finding the Fourth Proportional to 292.74, 403.98 and 161.75

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Solution

The fourth proportional to 292.74, 403.98 and 161.75 is: 223.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.74 : 403.98 = 161.75 : x
  2. Step 2: Convert to fraction form
    292.74/403.98 = 161.75/x
  3. Step 3: Cross multiply
    292.74x = 403.98 × 161.75
  4. Step 4: Simplify right side
    292.74x = 65,343.77
  5. Step 5: Solve for x
    x = 65,343.77/292.74
  6. Step 6: Final answer
    x = 223.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.