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Finding the Fourth Proportional to 1,500.66, 2,070.36 and 879.66

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Solution

The fourth proportional to 1,500.66, 2,070.36 and 879.66 is: 1,213.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500.66 : 2,070.36 = 879.66 : x
  2. Step 2: Convert to fraction form
    1,500.66/2,070.36 = 879.66/x
  3. Step 3: Cross multiply
    1,500.66x = 2,070.36 × 879.66
  4. Step 4: Simplify right side
    1,500.66x = 1,821,212.88
  5. Step 5: Solve for x
    x = 1,821,212.88/1,500.66
  6. Step 6: Final answer
    x = 1,213.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.