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Finding the Fourth Proportional to 1,331.02, 1,836.78 and 741.52

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Solution

The fourth proportional to 1,331.02, 1,836.78 and 741.52 is: 1,023.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.02 : 1,836.78 = 741.52 : x
  2. Step 2: Convert to fraction form
    1,331.02/1,836.78 = 741.52/x
  3. Step 3: Cross multiply
    1,331.02x = 1,836.78 × 741.52
  4. Step 4: Simplify right side
    1,331.02x = 1,362,009.11
  5. Step 5: Solve for x
    x = 1,362,009.11/1,331.02
  6. Step 6: Final answer
    x = 1,023.28

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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.