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Finding the Fourth Proportional to 903.28, 1,246.39 and 549.02

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Solution

The fourth proportional to 903.28, 1,246.39 and 549.02 is: 757.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.28 : 1,246.39 = 549.02 : x
  2. Step 2: Convert to fraction form
    903.28/1,246.39 = 549.02/x
  3. Step 3: Cross multiply
    903.28x = 1,246.39 × 549.02
  4. Step 4: Simplify right side
    903.28x = 684,286.02
  5. Step 5: Solve for x
    x = 684,286.02/903.28
  6. Step 6: Final answer
    x = 757.56

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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.