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Finding the Fourth Proportional to 628.89, 942.31 and 604.89

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Solution

The fourth proportional to 628.89, 942.31 and 604.89 is: 906.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.89 : 942.31 = 604.89 : x
  2. Step 2: Convert to fraction form
    628.89/942.31 = 604.89/x
  3. Step 3: Cross multiply
    628.89x = 942.31 × 604.89
  4. Step 4: Simplify right side
    628.89x = 569,990.87
  5. Step 5: Solve for x
    x = 569,990.87/628.89
  6. Step 6: Final answer
    x = 906.34

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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.