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Finding the Fourth Proportional to 177.26, 244.55 and 99.63

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Solution

The fourth proportional to 177.26, 244.55 and 99.63 is: 137.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.26 : 244.55 = 99.63 : x
  2. Step 2: Convert to fraction form
    177.26/244.55 = 99.63/x
  3. Step 3: Cross multiply
    177.26x = 244.55 × 99.63
  4. Step 4: Simplify right side
    177.26x = 24,364.02
  5. Step 5: Solve for x
    x = 24,364.02/177.26
  6. Step 6: Final answer
    x = 137.45

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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.