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Finding the Fourth Proportional to 741.49, 1,111.12 and 375.77

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Solution

The fourth proportional to 741.49, 1,111.12 and 375.77 is: 563.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.49 : 1,111.12 = 375.77 : x
  2. Step 2: Convert to fraction form
    741.49/1,111.12 = 375.77/x
  3. Step 3: Cross multiply
    741.49x = 1,111.12 × 375.77
  4. Step 4: Simplify right side
    741.49x = 417,527.40
  5. Step 5: Solve for x
    x = 417,527.40/741.49
  6. Step 6: Final answer
    x = 563.09

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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.