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Finding the Fourth Proportional to 442.64, 663.99 and 118

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Solution

The fourth proportional to 442.64, 663.99 and 118 is: 177.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.64 : 663.99 = 118 : x
  2. Step 2: Convert to fraction form
    442.64/663.99 = 118/x
  3. Step 3: Cross multiply
    442.64x = 663.99 × 118
  4. Step 4: Simplify right side
    442.64x = 78,350.82
  5. Step 5: Solve for x
    x = 78,350.82/442.64
  6. Step 6: Final answer
    x = 177.01

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.