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Finding the Fourth Proportional to 145.33, 200.65 and 112.07

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Solution

The fourth proportional to 145.33, 200.65 and 112.07 is: 154.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.33 : 200.65 = 112.07 : x
  2. Step 2: Convert to fraction form
    145.33/200.65 = 112.07/x
  3. Step 3: Cross multiply
    145.33x = 200.65 × 112.07
  4. Step 4: Simplify right side
    145.33x = 22,486.29
  5. Step 5: Solve for x
    x = 22,486.29/145.33
  6. Step 6: Final answer
    x = 154.73

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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.