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Finding the Fourth Proportional to 754.92, 1,041.86 and 423.46

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Solution

The fourth proportional to 754.92, 1,041.86 and 423.46 is: 584.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.92 : 1,041.86 = 423.46 : x
  2. Step 2: Convert to fraction form
    754.92/1,041.86 = 423.46/x
  3. Step 3: Cross multiply
    754.92x = 1,041.86 × 423.46
  4. Step 4: Simplify right side
    754.92x = 441,186.04
  5. Step 5: Solve for x
    x = 441,186.04/754.92
  6. Step 6: Final answer
    x = 584.41

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1.5x scale

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.