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Finding the Fourth Proportional to 176.22, 243.03 and 117.90

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Solution

The fourth proportional to 176.22, 243.03 and 117.90 is: 162.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.22 : 243.03 = 117.90 : x
  2. Step 2: Convert to fraction form
    176.22/243.03 = 117.90/x
  3. Step 3: Cross multiply
    176.22x = 243.03 × 117.90
  4. Step 4: Simplify right side
    176.22x = 28,653.24
  5. Step 5: Solve for x
    x = 28,653.24/176.22
  6. Step 6: Final answer
    x = 162.60

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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.