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Finding the Fourth Proportional to 669.70, 1,004.73 and 236.89

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Solution

The fourth proportional to 669.70, 1,004.73 and 236.89 is: 355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.70 : 1,004.73 = 236.89 : x
  2. Step 2: Convert to fraction form
    669.70/1,004.73 = 236.89/x
  3. Step 3: Cross multiply
    669.70x = 1,004.73 × 236.89
  4. Step 4: Simplify right side
    669.70x = 238,010.49
  5. Step 5: Solve for x
    x = 238,010.49/669.70
  6. Step 6: Final answer
    x = 355.40

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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.