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Finding the Fourth Proportional to 177.07, 244.37 and 99.45

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Solution

The fourth proportional to 177.07, 244.37 and 99.45 is: 137.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.07 : 244.37 = 99.45 : x
  2. Step 2: Convert to fraction form
    177.07/244.37 = 99.45/x
  3. Step 3: Cross multiply
    177.07x = 244.37 × 99.45
  4. Step 4: Simplify right side
    177.07x = 24,302.60
  5. Step 5: Solve for x
    x = 24,302.60/177.07
  6. Step 6: Final answer
    x = 137.25

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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.