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Finding the Fourth Proportional to 176.18, 262.82 and 145.65

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Solution

The fourth proportional to 176.18, 262.82 and 145.65 is: 217.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.18 : 262.82 = 145.65 : x
  2. Step 2: Convert to fraction form
    176.18/262.82 = 145.65/x
  3. Step 3: Cross multiply
    176.18x = 262.82 × 145.65
  4. Step 4: Simplify right side
    176.18x = 38,279.19
  5. Step 5: Solve for x
    x = 38,279.19/176.18
  6. Step 6: Final answer
    x = 217.28

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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.