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Finding the Fourth Proportional to 674.92, 931.98 and 413.32

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Solution

The fourth proportional to 674.92, 931.98 and 413.32 is: 570.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.92 : 931.98 = 413.32 : x
  2. Step 2: Convert to fraction form
    674.92/931.98 = 413.32/x
  3. Step 3: Cross multiply
    674.92x = 931.98 × 413.32
  4. Step 4: Simplify right side
    674.92x = 385,205.97
  5. Step 5: Solve for x
    x = 385,205.97/674.92
  6. Step 6: Final answer
    x = 570.74

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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.