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Finding the Fourth Proportional to 707.91, 977.00 and 413.25

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Solution

The fourth proportional to 707.91, 977.00 and 413.25 is: 570.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.91 : 977.00 = 413.25 : x
  2. Step 2: Convert to fraction form
    707.91/977.00 = 413.25/x
  3. Step 3: Cross multiply
    707.91x = 977.00 × 413.25
  4. Step 4: Simplify right side
    707.91x = 403,743.18
  5. Step 5: Solve for x
    x = 403,743.18/707.91
  6. Step 6: Final answer
    x = 570.33

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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.