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Finding the Fourth Proportional to 1,962.81, 2,944.29 and 576.15

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Solution

The fourth proportional to 1,962.81, 2,944.29 and 576.15 is: 864.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.81 : 2,944.29 = 576.15 : x
  2. Step 2: Convert to fraction form
    1,962.81/2,944.29 = 576.15/x
  3. Step 3: Cross multiply
    1,962.81x = 2,944.29 × 576.15
  4. Step 4: Simplify right side
    1,962.81x = 1,696,352.68
  5. Step 5: Solve for x
    x = 1,696,352.68/1,962.81
  6. Step 6: Final answer
    x = 864.25

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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.