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Finding the Fourth Proportional to 1,355.39, 2,033.43 and 625.48

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Solution

The fourth proportional to 1,355.39, 2,033.43 and 625.48 is: 938.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.39 : 2,033.43 = 625.48 : x
  2. Step 2: Convert to fraction form
    1,355.39/2,033.43 = 625.48/x
  3. Step 3: Cross multiply
    1,355.39x = 2,033.43 × 625.48
  4. Step 4: Simplify right side
    1,355.39x = 1,271,864.71
  5. Step 5: Solve for x
    x = 1,271,864.71/1,355.39
  6. Step 6: Final answer
    x = 938.37

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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.