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Finding the Fourth Proportional to 674.07, 1,007.47 and 608.03

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Solution

The fourth proportional to 674.07, 1,007.47 and 608.03 is: 908.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.07 : 1,007.47 = 608.03 : x
  2. Step 2: Convert to fraction form
    674.07/1,007.47 = 608.03/x
  3. Step 3: Cross multiply
    674.07x = 1,007.47 × 608.03
  4. Step 4: Simplify right side
    674.07x = 612,571.48
  5. Step 5: Solve for x
    x = 612,571.48/674.07
  6. Step 6: Final answer
    x = 908.77

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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.