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Finding the Fourth Proportional to 176.71, 243.68 and 117.68

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Solution

The fourth proportional to 176.71, 243.68 and 117.68 is: 162.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.71 : 243.68 = 117.68 : x
  2. Step 2: Convert to fraction form
    176.71/243.68 = 117.68/x
  3. Step 3: Cross multiply
    176.71x = 243.68 × 117.68
  4. Step 4: Simplify right side
    176.71x = 28,676.26
  5. Step 5: Solve for x
    x = 28,676.26/176.71
  6. Step 6: Final answer
    x = 162.28

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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.