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Finding the Fourth Proportional to 841.38, 1,258.44 and 607.62

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Solution

The fourth proportional to 841.38, 1,258.44 and 607.62 is: 908.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.38 : 1,258.44 = 607.62 : x
  2. Step 2: Convert to fraction form
    841.38/1,258.44 = 607.62/x
  3. Step 3: Cross multiply
    841.38x = 1,258.44 × 607.62
  4. Step 4: Simplify right side
    841.38x = 764,653.31
  5. Step 5: Solve for x
    x = 764,653.31/841.38
  6. Step 6: Final answer
    x = 908.81

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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.