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Finding the Fourth Proportional to 756.46, 1,043.83 and 425

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Solution

The fourth proportional to 756.46, 1,043.83 and 425 is: 586.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.46 : 1,043.83 = 425 : x
  2. Step 2: Convert to fraction form
    756.46/1,043.83 = 425/x
  3. Step 3: Cross multiply
    756.46x = 1,043.83 × 425
  4. Step 4: Simplify right side
    756.46x = 443,627.75
  5. Step 5: Solve for x
    x = 443,627.75/756.46
  6. Step 6: Final answer
    x = 586.45

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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.