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Finding the Fourth Proportional to 708.26, 977.42 and 413.42

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Solution

The fourth proportional to 708.26, 977.42 and 413.42 is: 570.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.26 : 977.42 = 413.42 : x
  2. Step 2: Convert to fraction form
    708.26/977.42 = 413.42/x
  3. Step 3: Cross multiply
    708.26x = 977.42 × 413.42
  4. Step 4: Simplify right side
    708.26x = 404,082.91
  5. Step 5: Solve for x
    x = 404,082.91/708.26
  6. Step 6: Final answer
    x = 570.53

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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.