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Finding the Fourth Proportional to 1,102.55, 1,651.67 and 581.77

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Solution

The fourth proportional to 1,102.55, 1,651.67 and 581.77 is: 871.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102.55 : 1,651.67 = 581.77 : x
  2. Step 2: Convert to fraction form
    1,102.55/1,651.67 = 581.77/x
  3. Step 3: Cross multiply
    1,102.55x = 1,651.67 × 581.77
  4. Step 4: Simplify right side
    1,102.55x = 960,892.06
  5. Step 5: Solve for x
    x = 960,892.06/1,102.55
  6. Step 6: Final answer
    x = 871.52

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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.