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Finding the Fourth Proportional to 674.04, 930.22 and 394.32

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Solution

The fourth proportional to 674.04, 930.22 and 394.32 is: 544.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.04 : 930.22 = 394.32 : x
  2. Step 2: Convert to fraction form
    674.04/930.22 = 394.32/x
  3. Step 3: Cross multiply
    674.04x = 930.22 × 394.32
  4. Step 4: Simplify right side
    674.04x = 366,804.35
  5. Step 5: Solve for x
    x = 366,804.35/674.04
  6. Step 6: Final answer
    x = 544.19

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1.5x scale

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.