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Finding the Fourth Proportional to 1,349.56, 1,863 and 902.17

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Solution

The fourth proportional to 1,349.56, 1,863 and 902.17 is: 1,245.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.56 : 1,863 = 902.17 : x
  2. Step 2: Convert to fraction form
    1,349.56/1,863 = 902.17/x
  3. Step 3: Cross multiply
    1,349.56x = 1,863 × 902.17
  4. Step 4: Simplify right side
    1,349.56x = 1,680,742.71
  5. Step 5: Solve for x
    x = 1,680,742.71/1,349.56
  6. Step 6: Final answer
    x = 1,245.40

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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.