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Finding the Fourth Proportional to 674.97, 1,012.43 and 188.01

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Solution

The fourth proportional to 674.97, 1,012.43 and 188.01 is: 282.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.97 : 1,012.43 = 188.01 : x
  2. Step 2: Convert to fraction form
    674.97/1,012.43 = 188.01/x
  3. Step 3: Cross multiply
    674.97x = 1,012.43 × 188.01
  4. Step 4: Simplify right side
    674.97x = 190,346.96
  5. Step 5: Solve for x
    x = 190,346.96/674.97
  6. Step 6: Final answer
    x = 282.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.