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Finding the Fourth Proportional to 923.85, 1,274.87 and 525.49

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Solution

The fourth proportional to 923.85, 1,274.87 and 525.49 is: 725.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.85 : 1,274.87 = 525.49 : x
  2. Step 2: Convert to fraction form
    923.85/1,274.87 = 525.49/x
  3. Step 3: Cross multiply
    923.85x = 1,274.87 × 525.49
  4. Step 4: Simplify right side
    923.85x = 669,929.56
  5. Step 5: Solve for x
    x = 669,929.56/923.85
  6. Step 6: Final answer
    x = 725.15

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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.