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Finding the Fourth Proportional to 1,962.28, 2,943.40 and 501.43

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Solution

The fourth proportional to 1,962.28, 2,943.40 and 501.43 is: 752.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.28 : 2,943.40 = 501.43 : x
  2. Step 2: Convert to fraction form
    1,962.28/2,943.40 = 501.43/x
  3. Step 3: Cross multiply
    1,962.28x = 2,943.40 × 501.43
  4. Step 4: Simplify right side
    1,962.28x = 1,475,909.06
  5. Step 5: Solve for x
    x = 1,475,909.06/1,962.28
  6. Step 6: Final answer
    x = 752.14

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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.