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Finding the Fourth Proportional to 619.07, 928.02 and 310.56

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Solution

The fourth proportional to 619.07, 928.02 and 310.56 is: 465.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.07 : 928.02 = 310.56 : x
  2. Step 2: Convert to fraction form
    619.07/928.02 = 310.56/x
  3. Step 3: Cross multiply
    619.07x = 928.02 × 310.56
  4. Step 4: Simplify right side
    619.07x = 288,207.35
  5. Step 5: Solve for x
    x = 288,207.35/619.07
  6. Step 6: Final answer
    x = 465.55

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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.