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Finding the Fourth Proportional to 413.20, 570.17 and 302.73

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Solution

The fourth proportional to 413.20, 570.17 and 302.73 is: 417.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.20 : 570.17 = 302.73 : x
  2. Step 2: Convert to fraction form
    413.20/570.17 = 302.73/x
  3. Step 3: Cross multiply
    413.20x = 570.17 × 302.73
  4. Step 4: Simplify right side
    413.20x = 172,607.56
  5. Step 5: Solve for x
    x = 172,607.56/413.20
  6. Step 6: Final answer
    x = 417.74

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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.