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Finding the Fourth Proportional to 619.44, 927.94 and 581.16

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Solution

The fourth proportional to 619.44, 927.94 and 581.16 is: 870.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.44 : 927.94 = 581.16 : x
  2. Step 2: Convert to fraction form
    619.44/927.94 = 581.16/x
  3. Step 3: Cross multiply
    619.44x = 927.94 × 581.16
  4. Step 4: Simplify right side
    619.44x = 539,281.61
  5. Step 5: Solve for x
    x = 539,281.61/619.44
  6. Step 6: Final answer
    x = 870.60

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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.