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Finding the Fourth Proportional to 619.62, 928.07 and 310.94

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Solution

The fourth proportional to 619.62, 928.07 and 310.94 is: 465.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.62 : 928.07 = 310.94 : x
  2. Step 2: Convert to fraction form
    619.62/928.07 = 310.94/x
  3. Step 3: Cross multiply
    619.62x = 928.07 × 310.94
  4. Step 4: Simplify right side
    619.62x = 288,569.45
  5. Step 5: Solve for x
    x = 288,569.45/619.62
  6. Step 6: Final answer
    x = 465.72

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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.