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Finding the Fourth Proportional to 669.16, 922.60 and 550.72

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Solution

The fourth proportional to 669.16, 922.60 and 550.72 is: 759.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.16 : 922.60 = 550.72 : x
  2. Step 2: Convert to fraction form
    669.16/922.60 = 550.72/x
  3. Step 3: Cross multiply
    669.16x = 922.60 × 550.72
  4. Step 4: Simplify right side
    669.16x = 508,094.27
  5. Step 5: Solve for x
    x = 508,094.27/669.16
  6. Step 6: Final answer
    x = 759.30

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Why These Related Problems?

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