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Finding the Fourth Proportional to 211.53, 292.18 and 162.32

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Solution

The fourth proportional to 211.53, 292.18 and 162.32 is: 224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    211.53 : 292.18 = 162.32 : x
  2. Step 2: Convert to fraction form
    211.53/292.18 = 162.32/x
  3. Step 3: Cross multiply
    211.53x = 292.18 × 162.32
  4. Step 4: Simplify right side
    211.53x = 47,426.33
  5. Step 5: Solve for x
    x = 47,426.33/211.53
  6. Step 6: Final answer
    x = 224.21

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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.