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Finding the Fourth Proportional to 40.99, 56.56 and 22.57

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Solution

The fourth proportional to 40.99, 56.56 and 22.57 is: 31.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.99 : 56.56 = 22.57 : x
  2. Step 2: Convert to fraction form
    40.99/56.56 = 22.57/x
  3. Step 3: Cross multiply
    40.99x = 56.56 × 22.57
  4. Step 4: Simplify right side
    40.99x = 1,276.42
  5. Step 5: Solve for x
    x = 1,276.42/40.99
  6. Step 6: Final answer
    x = 31.14

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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.