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Finding the Fourth Proportional to 1,555.22, 2,333.25 and 581.42

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Solution

The fourth proportional to 1,555.22, 2,333.25 and 581.42 is: 872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.22 : 2,333.25 = 581.42 : x
  2. Step 2: Convert to fraction form
    1,555.22/2,333.25 = 581.42/x
  3. Step 3: Cross multiply
    1,555.22x = 2,333.25 × 581.42
  4. Step 4: Simplify right side
    1,555.22x = 1,356,598.22
  5. Step 5: Solve for x
    x = 1,356,598.22/1,555.22
  6. Step 6: Final answer
    x = 872.29

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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.