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Finding the Fourth Proportional to 1,612.17, 2,418.63 and 516.45

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Solution

The fourth proportional to 1,612.17, 2,418.63 and 516.45 is: 774.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.17 : 2,418.63 = 516.45 : x
  2. Step 2: Convert to fraction form
    1,612.17/2,418.63 = 516.45/x
  3. Step 3: Cross multiply
    1,612.17x = 2,418.63 × 516.45
  4. Step 4: Simplify right side
    1,612.17x = 1,249,101.46
  5. Step 5: Solve for x
    x = 1,249,101.46/1,612.17
  6. Step 6: Final answer
    x = 774.80

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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.