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Finding the Fourth Proportional to 923.89, 1,274.91 and 504.22

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Solution

The fourth proportional to 923.89, 1,274.91 and 504.22 is: 695.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.89 : 1,274.91 = 504.22 : x
  2. Step 2: Convert to fraction form
    923.89/1,274.91 = 504.22/x
  3. Step 3: Cross multiply
    923.89x = 1,274.91 × 504.22
  4. Step 4: Simplify right side
    923.89x = 642,835.12
  5. Step 5: Solve for x
    x = 642,835.12/923.89
  6. Step 6: Final answer
    x = 695.79

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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.