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Finding the Fourth Proportional to 1,983.64, 2,975.04 and 522.70

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Solution

The fourth proportional to 1,983.64, 2,975.04 and 522.70 is: 783.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.64 : 2,975.04 = 522.70 : x
  2. Step 2: Convert to fraction form
    1,983.64/2,975.04 = 522.70/x
  3. Step 3: Cross multiply
    1,983.64x = 2,975.04 × 522.70
  4. Step 4: Simplify right side
    1,983.64x = 1,555,053.41
  5. Step 5: Solve for x
    x = 1,555,053.41/1,983.64
  6. Step 6: Final answer
    x = 783.94

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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.