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Finding the Fourth Proportional to 211.83, 292.40 and 124.50

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Solution

The fourth proportional to 211.83, 292.40 and 124.50 is: 171.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    211.83 : 292.40 = 124.50 : x
  2. Step 2: Convert to fraction form
    211.83/292.40 = 124.50/x
  3. Step 3: Cross multiply
    211.83x = 292.40 × 124.50
  4. Step 4: Simplify right side
    211.83x = 36,403.80
  5. Step 5: Solve for x
    x = 36,403.80/211.83
  6. Step 6: Final answer
    x = 171.85

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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.