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Finding the Fourth Proportional to 662.86, 993.48 and 480.07

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Solution

The fourth proportional to 662.86, 993.48 and 480.07 is: 719.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.86 : 993.48 = 480.07 : x
  2. Step 2: Convert to fraction form
    662.86/993.48 = 480.07/x
  3. Step 3: Cross multiply
    662.86x = 993.48 × 480.07
  4. Step 4: Simplify right side
    662.86x = 476,939.94
  5. Step 5: Solve for x
    x = 476,939.94/662.86
  6. Step 6: Final answer
    x = 719.52

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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.