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Finding the Fourth Proportional to 770.44, 1,063.08 and 574.42

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Solution

The fourth proportional to 770.44, 1,063.08 and 574.42 is: 792.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    770.44 : 1,063.08 = 574.42 : x
  2. Step 2: Convert to fraction form
    770.44/1,063.08 = 574.42/x
  3. Step 3: Cross multiply
    770.44x = 1,063.08 × 574.42
  4. Step 4: Simplify right side
    770.44x = 610,654.41
  5. Step 5: Solve for x
    x = 610,654.41/770.44
  6. Step 6: Final answer
    x = 792.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.