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Finding the Fourth Proportional to 607.64, 911.26 and 517.32

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Solution

The fourth proportional to 607.64, 911.26 and 517.32 is: 775.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.64 : 911.26 = 517.32 : x
  2. Step 2: Convert to fraction form
    607.64/911.26 = 517.32/x
  3. Step 3: Cross multiply
    607.64x = 911.26 × 517.32
  4. Step 4: Simplify right side
    607.64x = 471,413.02
  5. Step 5: Solve for x
    x = 471,413.02/607.64
  6. Step 6: Final answer
    x = 775.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.