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Finding the Fourth Proportional to 1,576, 2,361.30 and 1,330.84

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Solution

The fourth proportional to 1,576, 2,361.30 and 1,330.84 is: 1,993.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576 : 2,361.30 = 1,330.84 : x
  2. Step 2: Convert to fraction form
    1,576/2,361.30 = 1,330.84/x
  3. Step 3: Cross multiply
    1,576x = 2,361.30 × 1,330.84
  4. Step 4: Simplify right side
    1,576x = 3,142,512.49
  5. Step 5: Solve for x
    x = 3,142,512.49/1,576
  6. Step 6: Final answer
    x = 1,993.98

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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.