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Finding the Fourth Proportional to 619.48, 930.30 and 568.84

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Solution

The fourth proportional to 619.48, 930.30 and 568.84 is: 854.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.48 : 930.30 = 568.84 : x
  2. Step 2: Convert to fraction form
    619.48/930.30 = 568.84/x
  3. Step 3: Cross multiply
    619.48x = 930.30 × 568.84
  4. Step 4: Simplify right side
    619.48x = 529,191.85
  5. Step 5: Solve for x
    x = 529,191.85/619.48
  6. Step 6: Final answer
    x = 854.25

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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.