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Finding the Fourth Proportional to 137.59, 206.28 and 56.33

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Solution

The fourth proportional to 137.59, 206.28 and 56.33 is: 84.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    137.59 : 206.28 = 56.33 : x
  2. Step 2: Convert to fraction form
    137.59/206.28 = 56.33/x
  3. Step 3: Cross multiply
    137.59x = 206.28 × 56.33
  4. Step 4: Simplify right side
    137.59x = 11,619.75
  5. Step 5: Solve for x
    x = 11,619.75/137.59
  6. Step 6: Final answer
    x = 84.45

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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.