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Finding the Fourth Proportional to 1,077.26, 1,615.62 and 346.68

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Solution

The fourth proportional to 1,077.26, 1,615.62 and 346.68 is: 519.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077.26 : 1,615.62 = 346.68 : x
  2. Step 2: Convert to fraction form
    1,077.26/1,615.62 = 346.68/x
  3. Step 3: Cross multiply
    1,077.26x = 1,615.62 × 346.68
  4. Step 4: Simplify right side
    1,077.26x = 560,103.14
  5. Step 5: Solve for x
    x = 560,103.14/1,077.26
  6. Step 6: Final answer
    x = 519.93

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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.