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Finding the Fourth Proportional to 1,376.28, 2,064.42 and 350.28

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Solution

The fourth proportional to 1,376.28, 2,064.42 and 350.28 is: 525.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376.28 : 2,064.42 = 350.28 : x
  2. Step 2: Convert to fraction form
    1,376.28/2,064.42 = 350.28/x
  3. Step 3: Cross multiply
    1,376.28x = 2,064.42 × 350.28
  4. Step 4: Simplify right side
    1,376.28x = 723,125.04
  5. Step 5: Solve for x
    x = 723,125.04/1,376.28
  6. Step 6: Final answer
    x = 525.42

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1.5x scale

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.