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Finding the Fourth Proportional to 740.44, 1,111.34 and 375.48

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Solution

The fourth proportional to 740.44, 1,111.34 and 375.48 is: 563.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.44 : 1,111.34 = 375.48 : x
  2. Step 2: Convert to fraction form
    740.44/1,111.34 = 375.48/x
  3. Step 3: Cross multiply
    740.44x = 1,111.34 × 375.48
  4. Step 4: Simplify right side
    740.44x = 417,285.94
  5. Step 5: Solve for x
    x = 417,285.94/740.44
  6. Step 6: Final answer
    x = 563.56

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Why These Related Problems?

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