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Finding the Fourth Proportional to 169.69, 233.65 and 145.07

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Solution

The fourth proportional to 169.69, 233.65 and 145.07 is: 199.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.69 : 233.65 = 145.07 : x
  2. Step 2: Convert to fraction form
    169.69/233.65 = 145.07/x
  3. Step 3: Cross multiply
    169.69x = 233.65 × 145.07
  4. Step 4: Simplify right side
    169.69x = 33,895.61
  5. Step 5: Solve for x
    x = 33,895.61/169.69
  6. Step 6: Final answer
    x = 199.75

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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.