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Finding the Fourth Proportional to 538.03, 742.85 and 413.47

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Solution

The fourth proportional to 538.03, 742.85 and 413.47 is: 570.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.03 : 742.85 = 413.47 : x
  2. Step 2: Convert to fraction form
    538.03/742.85 = 413.47/x
  3. Step 3: Cross multiply
    538.03x = 742.85 × 413.47
  4. Step 4: Simplify right side
    538.03x = 307,146.19
  5. Step 5: Solve for x
    x = 307,146.19/538.03
  6. Step 6: Final answer
    x = 570.87

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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.