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Finding the Fourth Proportional to 1,055.82, 1,583.68 and 362.55

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Solution

The fourth proportional to 1,055.82, 1,583.68 and 362.55 is: 543.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.82 : 1,583.68 = 362.55 : x
  2. Step 2: Convert to fraction form
    1,055.82/1,583.68 = 362.55/x
  3. Step 3: Cross multiply
    1,055.82x = 1,583.68 × 362.55
  4. Step 4: Simplify right side
    1,055.82x = 574,162.28
  5. Step 5: Solve for x
    x = 574,162.28/1,055.82
  6. Step 6: Final answer
    x = 543.81

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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.