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Finding the Fourth Proportional to 660.08, 992.96 and 550.72

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Solution

The fourth proportional to 660.08, 992.96 and 550.72 is: 828.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.08 : 992.96 = 550.72 : x
  2. Step 2: Convert to fraction form
    660.08/992.96 = 550.72/x
  3. Step 3: Cross multiply
    660.08x = 992.96 × 550.72
  4. Step 4: Simplify right side
    660.08x = 546,842.93
  5. Step 5: Solve for x
    x = 546,842.93/660.08
  6. Step 6: Final answer
    x = 828.45

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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.