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Finding the Fourth Proportional to 211.74, 292.72 and 162.54

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Solution

The fourth proportional to 211.74, 292.72 and 162.54 is: 224.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211.74 : 292.72 = 162.54 : x
  2. Step 2: Convert to fraction form
    211.74/292.72 = 162.54/x
  3. Step 3: Cross multiply
    211.74x = 292.72 × 162.54
  4. Step 4: Simplify right side
    211.74x = 47,578.71
  5. Step 5: Solve for x
    x = 47,578.71/211.74
  6. Step 6: Final answer
    x = 224.70

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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.