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Finding the Fourth Proportional to 1,059.21, 1,461.61 and 610.96

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Solution

The fourth proportional to 1,059.21, 1,461.61 and 610.96 is: 843.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059.21 : 1,461.61 = 610.96 : x
  2. Step 2: Convert to fraction form
    1,059.21/1,461.61 = 610.96/x
  3. Step 3: Cross multiply
    1,059.21x = 1,461.61 × 610.96
  4. Step 4: Simplify right side
    1,059.21x = 892,985.25
  5. Step 5: Solve for x
    x = 892,985.25/1,059.21
  6. Step 6: Final answer
    x = 843.07

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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.