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Finding the Fourth Proportional to 754.79, 1,041.29 and 440.03

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Solution

The fourth proportional to 754.79, 1,041.29 and 440.03 is: 607.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.79 : 1,041.29 = 440.03 : x
  2. Step 2: Convert to fraction form
    754.79/1,041.29 = 440.03/x
  3. Step 3: Cross multiply
    754.79x = 1,041.29 × 440.03
  4. Step 4: Simplify right side
    754.79x = 458,200.89
  5. Step 5: Solve for x
    x = 458,200.89/754.79
  6. Step 6: Final answer
    x = 607.06

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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.