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Finding the Fourth Proportional to 1,363.23, 1,880.43 and 964.28

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Solution

The fourth proportional to 1,363.23, 1,880.43 and 964.28 is: 1,330.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,363.23 : 1,880.43 = 964.28 : x
  2. Step 2: Convert to fraction form
    1,363.23/1,880.43 = 964.28/x
  3. Step 3: Cross multiply
    1,363.23x = 1,880.43 × 964.28
  4. Step 4: Simplify right side
    1,363.23x = 1,813,251.64
  5. Step 5: Solve for x
    x = 1,813,251.64/1,363.23
  6. Step 6: Final answer
    x = 1,330.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.