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Finding the Fourth Proportional to 503.93, 695.22 and 399.03

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Solution

The fourth proportional to 503.93, 695.22 and 399.03 is: 550.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.93 : 695.22 = 399.03 : x
  2. Step 2: Convert to fraction form
    503.93/695.22 = 399.03/x
  3. Step 3: Cross multiply
    503.93x = 695.22 × 399.03
  4. Step 4: Simplify right side
    503.93x = 277,413.64
  5. Step 5: Solve for x
    x = 277,413.64/503.93
  6. Step 6: Final answer
    x = 550.51

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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.