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Finding the Fourth Proportional to 1,355.40, 2,033.86 and 624.97

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Solution

The fourth proportional to 1,355.40, 2,033.86 and 624.97 is: 937.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.40 : 2,033.86 = 624.97 : x
  2. Step 2: Convert to fraction form
    1,355.40/2,033.86 = 624.97/x
  3. Step 3: Cross multiply
    1,355.40x = 2,033.86 × 624.97
  4. Step 4: Simplify right side
    1,355.40x = 1,271,110.57
  5. Step 5: Solve for x
    x = 1,271,110.57/1,355.40
  6. Step 6: Final answer
    x = 937.81

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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.