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Finding the Fourth Proportional to 619.22, 928.32 and 503.38

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Solution

The fourth proportional to 619.22, 928.32 and 503.38 is: 754.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.22 : 928.32 = 503.38 : x
  2. Step 2: Convert to fraction form
    619.22/928.32 = 503.38/x
  3. Step 3: Cross multiply
    619.22x = 928.32 × 503.38
  4. Step 4: Simplify right side
    619.22x = 467,297.72
  5. Step 5: Solve for x
    x = 467,297.72/619.22
  6. Step 6: Final answer
    x = 754.66

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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.