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Finding the Fourth Proportional to 211.01, 316.40 and 74.00

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Solution

The fourth proportional to 211.01, 316.40 and 74.00 is: 110.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    211.01 : 316.40 = 74.00 : x
  2. Step 2: Convert to fraction form
    211.01/316.40 = 74.00/x
  3. Step 3: Cross multiply
    211.01x = 316.40 × 74.00
  4. Step 4: Simplify right side
    211.01x = 23,414.02
  5. Step 5: Solve for x
    x = 23,414.02/211.01
  6. Step 6: Final answer
    x = 110.96

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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.