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Finding the Fourth Proportional to 744.87, 1,112.28 and 608.18

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Solution

The fourth proportional to 744.87, 1,112.28 and 608.18 is: 908.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.87 : 1,112.28 = 608.18 : x
  2. Step 2: Convert to fraction form
    744.87/1,112.28 = 608.18/x
  3. Step 3: Cross multiply
    744.87x = 1,112.28 × 608.18
  4. Step 4: Simplify right side
    744.87x = 676,467.34
  5. Step 5: Solve for x
    x = 676,467.34/744.87
  6. Step 6: Final answer
    x = 908.17

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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.