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Finding the Fourth Proportional to 1,069.28, 1,475.32 and 737.08

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Solution

The fourth proportional to 1,069.28, 1,475.32 and 737.08 is: 1,016.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069.28 : 1,475.32 = 737.08 : x
  2. Step 2: Convert to fraction form
    1,069.28/1,475.32 = 737.08/x
  3. Step 3: Cross multiply
    1,069.28x = 1,475.32 × 737.08
  4. Step 4: Simplify right side
    1,069.28x = 1,087,428.87
  5. Step 5: Solve for x
    x = 1,087,428.87/1,069.28
  6. Step 6: Final answer
    x = 1,016.97

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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.