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Finding the Fourth Proportional to 1,676.86, 2,515.64 and 506.95

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Solution

The fourth proportional to 1,676.86, 2,515.64 and 506.95 is: 760.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.86 : 2,515.64 = 506.95 : x
  2. Step 2: Convert to fraction form
    1,676.86/2,515.64 = 506.95/x
  3. Step 3: Cross multiply
    1,676.86x = 2,515.64 × 506.95
  4. Step 4: Simplify right side
    1,676.86x = 1,275,303.70
  5. Step 5: Solve for x
    x = 1,275,303.70/1,676.86
  6. Step 6: Final answer
    x = 760.53

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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.