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Finding the Fourth Proportional to 741.56, 1,111.80 and 356.36

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Solution

The fourth proportional to 741.56, 1,111.80 and 356.36 is: 534.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.56 : 1,111.80 = 356.36 : x
  2. Step 2: Convert to fraction form
    741.56/1,111.80 = 356.36/x
  3. Step 3: Cross multiply
    741.56x = 1,111.80 × 356.36
  4. Step 4: Simplify right side
    741.56x = 396,201.05
  5. Step 5: Solve for x
    x = 396,201.05/741.56
  6. Step 6: Final answer
    x = 534.28

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