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Finding the Fourth Proportional to 669.62, 1,004.88 and 236.77

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Solution

The fourth proportional to 669.62, 1,004.88 and 236.77 is: 355.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.62 : 1,004.88 = 236.77 : x
  2. Step 2: Convert to fraction form
    669.62/1,004.88 = 236.77/x
  3. Step 3: Cross multiply
    669.62x = 1,004.88 × 236.77
  4. Step 4: Simplify right side
    669.62x = 237,925.44
  5. Step 5: Solve for x
    x = 237,925.44/669.62
  6. Step 6: Final answer
    x = 355.31

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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.