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Finding the Fourth Proportional to 754.88, 1,041.75 and 423.32

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Solution

The fourth proportional to 754.88, 1,041.75 and 423.32 is: 584.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.88 : 1,041.75 = 423.32 : x
  2. Step 2: Convert to fraction form
    754.88/1,041.75 = 423.32/x
  3. Step 3: Cross multiply
    754.88x = 1,041.75 × 423.32
  4. Step 4: Simplify right side
    754.88x = 440,988.40
  5. Step 5: Solve for x
    x = 440,988.40/754.88
  6. Step 6: Final answer
    x = 584.19

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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.