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Finding the Fourth Proportional to 756.32, 1,043.90 and 441.74

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Solution

The fourth proportional to 756.32, 1,043.90 and 441.74 is: 609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.32 : 1,043.90 = 441.74 : x
  2. Step 2: Convert to fraction form
    756.32/1,043.90 = 441.74/x
  3. Step 3: Cross multiply
    756.32x = 1,043.90 × 441.74
  4. Step 4: Simplify right side
    756.32x = 461,133.60
  5. Step 5: Solve for x
    x = 461,133.60/756.32
  6. Step 6: Final answer
    x = 609.70

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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.