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Finding the Fourth Proportional to 1,140.28, 1,710.32 and 446.82

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Solution

The fourth proportional to 1,140.28, 1,710.32 and 446.82 is: 670.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.28 : 1,710.32 = 446.82 : x
  2. Step 2: Convert to fraction form
    1,140.28/1,710.32 = 446.82/x
  3. Step 3: Cross multiply
    1,140.28x = 1,710.32 × 446.82
  4. Step 4: Simplify right side
    1,140.28x = 764,205.18
  5. Step 5: Solve for x
    x = 764,205.18/1,140.28
  6. Step 6: Final answer
    x = 670.19

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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.