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Finding the Fourth Proportional to 176.55, 263.90 and 161.07

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Solution

The fourth proportional to 176.55, 263.90 and 161.07 is: 240.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.55 : 263.90 = 161.07 : x
  2. Step 2: Convert to fraction form
    176.55/263.90 = 161.07/x
  3. Step 3: Cross multiply
    176.55x = 263.90 × 161.07
  4. Step 4: Simplify right side
    176.55x = 42,506.37
  5. Step 5: Solve for x
    x = 42,506.37/176.55
  6. Step 6: Final answer
    x = 240.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.