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Finding the Fourth Proportional to 133.15, 199.71 and 56.10

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Solution

The fourth proportional to 133.15, 199.71 and 56.10 is: 84.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.15 : 199.71 = 56.10 : x
  2. Step 2: Convert to fraction form
    133.15/199.71 = 56.10/x
  3. Step 3: Cross multiply
    133.15x = 199.71 × 56.10
  4. Step 4: Simplify right side
    133.15x = 11,203.73
  5. Step 5: Solve for x
    x = 11,203.73/133.15
  6. Step 6: Final answer
    x = 84.14

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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.