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Finding the Fourth Proportional to 722.17, 1,082.74 and 370.88

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Solution

The fourth proportional to 722.17, 1,082.74 and 370.88 is: 556.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.17 : 1,082.74 = 370.88 : x
  2. Step 2: Convert to fraction form
    722.17/1,082.74 = 370.88/x
  3. Step 3: Cross multiply
    722.17x = 1,082.74 × 370.88
  4. Step 4: Simplify right side
    722.17x = 401,566.61
  5. Step 5: Solve for x
    x = 401,566.61/722.17
  6. Step 6: Final answer
    x = 556.06

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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.