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Finding the Fourth Proportional to 1,055.62, 1,585.25 and 625.51

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Solution

The fourth proportional to 1,055.62, 1,585.25 and 625.51 is: 939.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.62 : 1,585.25 = 625.51 : x
  2. Step 2: Convert to fraction form
    1,055.62/1,585.25 = 625.51/x
  3. Step 3: Cross multiply
    1,055.62x = 1,585.25 × 625.51
  4. Step 4: Simplify right side
    1,055.62x = 991,589.73
  5. Step 5: Solve for x
    x = 991,589.73/1,055.62
  6. Step 6: Final answer
    x = 939.34

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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.