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Finding the Fourth Proportional to 619.07, 928.89 and 310.95

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Solution

The fourth proportional to 619.07, 928.89 and 310.95 is: 466.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.07 : 928.89 = 310.95 : x
  2. Step 2: Convert to fraction form
    619.07/928.89 = 310.95/x
  3. Step 3: Cross multiply
    619.07x = 928.89 × 310.95
  4. Step 4: Simplify right side
    619.07x = 288,838.35
  5. Step 5: Solve for x
    x = 288,838.35/619.07
  6. Step 6: Final answer
    x = 466.57

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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.