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Finding the Fourth Proportional to 754.58, 1,130.94 and 441.64

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Solution

The fourth proportional to 754.58, 1,130.94 and 441.64 is: 661.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.58 : 1,130.94 = 441.64 : x
  2. Step 2: Convert to fraction form
    754.58/1,130.94 = 441.64/x
  3. Step 3: Cross multiply
    754.58x = 1,130.94 × 441.64
  4. Step 4: Simplify right side
    754.58x = 499,468.34
  5. Step 5: Solve for x
    x = 499,468.34/754.58
  6. Step 6: Final answer
    x = 661.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.