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Finding the Fourth Proportional to 708.38, 977.62 and 413.59

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Solution

The fourth proportional to 708.38, 977.62 and 413.59 is: 570.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.38 : 977.62 = 413.59 : x
  2. Step 2: Convert to fraction form
    708.38/977.62 = 413.59/x
  3. Step 3: Cross multiply
    708.38x = 977.62 × 413.59
  4. Step 4: Simplify right side
    708.38x = 404,333.86
  5. Step 5: Solve for x
    x = 404,333.86/708.38
  6. Step 6: Final answer
    x = 570.79

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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.