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Finding the Fourth Proportional to 724.19, 1,085.12 and 377.01

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Solution

The fourth proportional to 724.19, 1,085.12 and 377.01 is: 564.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.19 : 1,085.12 = 377.01 : x
  2. Step 2: Convert to fraction form
    724.19/1,085.12 = 377.01/x
  3. Step 3: Cross multiply
    724.19x = 1,085.12 × 377.01
  4. Step 4: Simplify right side
    724.19x = 409,102.03
  5. Step 5: Solve for x
    x = 409,102.03/724.19
  6. Step 6: Final answer
    x = 564.91

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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.