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Finding the Fourth Proportional to 169.65, 233.69 and 130.77

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Solution

The fourth proportional to 169.65, 233.69 and 130.77 is: 180.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.65 : 233.69 = 130.77 : x
  2. Step 2: Convert to fraction form
    169.65/233.69 = 130.77/x
  3. Step 3: Cross multiply
    169.65x = 233.69 × 130.77
  4. Step 4: Simplify right side
    169.65x = 30,558.99
  5. Step 5: Solve for x
    x = 30,558.99/169.65
  6. Step 6: Final answer
    x = 180.13

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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.