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Finding the Fourth Proportional to 318.03, 475.35 and 276.57

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Solution

The fourth proportional to 318.03, 475.35 and 276.57 is: 413.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.03 : 475.35 = 276.57 : x
  2. Step 2: Convert to fraction form
    318.03/475.35 = 276.57/x
  3. Step 3: Cross multiply
    318.03x = 475.35 × 276.57
  4. Step 4: Simplify right side
    318.03x = 131,467.55
  5. Step 5: Solve for x
    x = 131,467.55/318.03
  6. Step 6: Final answer
    x = 413.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.