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Finding the Fourth Proportional to 56.90, 85.27 and 22.63

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Solution

The fourth proportional to 56.90, 85.27 and 22.63 is: 33.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    56.90 : 85.27 = 22.63 : x
  2. Step 2: Convert to fraction form
    56.90/85.27 = 22.63/x
  3. Step 3: Cross multiply
    56.90x = 85.27 × 22.63
  4. Step 4: Simplify right side
    56.90x = 1,929.66
  5. Step 5: Solve for x
    x = 1,929.66/56.90
  6. Step 6: Final answer
    x = 33.91

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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.