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Finding the Fourth Proportional to 667.60, 920.62 and 574.68

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Solution

The fourth proportional to 667.60, 920.62 and 574.68 is: 792.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.60 : 920.62 = 574.68 : x
  2. Step 2: Convert to fraction form
    667.60/920.62 = 574.68/x
  3. Step 3: Cross multiply
    667.60x = 920.62 × 574.68
  4. Step 4: Simplify right side
    667.60x = 529,061.90
  5. Step 5: Solve for x
    x = 529,061.90/667.60
  6. Step 6: Final answer
    x = 792.48

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