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Finding the Fourth Proportional to 1,556.70, 2,335.28 and 516.34

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Solution

The fourth proportional to 1,556.70, 2,335.28 and 516.34 is: 774.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.70 : 2,335.28 = 516.34 : x
  2. Step 2: Convert to fraction form
    1,556.70/2,335.28 = 516.34/x
  3. Step 3: Cross multiply
    1,556.70x = 2,335.28 × 516.34
  4. Step 4: Simplify right side
    1,556.70x = 1,205,798.48
  5. Step 5: Solve for x
    x = 1,205,798.48/1,556.70
  6. Step 6: Final answer
    x = 774.59

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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.