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Finding the Fourth Proportional to 864.95, 1,190.60 and 754.22

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Solution

The fourth proportional to 864.95, 1,190.60 and 754.22 is: 1,038.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    864.95 : 1,190.60 = 754.22 : x
  2. Step 2: Convert to fraction form
    864.95/1,190.60 = 754.22/x
  3. Step 3: Cross multiply
    864.95x = 1,190.60 × 754.22
  4. Step 4: Simplify right side
    864.95x = 897,973.54
  5. Step 5: Solve for x
    x = 897,973.54/864.95
  6. Step 6: Final answer
    x = 1,038.19

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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.