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Finding the Fourth Proportional to 662.24, 993.48 and 554.78

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Solution

The fourth proportional to 662.24, 993.48 and 554.78 is: 832.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.24 : 993.48 = 554.78 : x
  2. Step 2: Convert to fraction form
    662.24/993.48 = 554.78/x
  3. Step 3: Cross multiply
    662.24x = 993.48 × 554.78
  4. Step 4: Simplify right side
    662.24x = 551,157.87
  5. Step 5: Solve for x
    x = 551,157.87/662.24
  6. Step 6: Final answer
    x = 832.27

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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.