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Finding the Fourth Proportional to 1,676.77, 2,515.16 and 444.19

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Solution

The fourth proportional to 1,676.77, 2,515.16 and 444.19 is: 666.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.77 : 2,515.16 = 444.19 : x
  2. Step 2: Convert to fraction form
    1,676.77/2,515.16 = 444.19/x
  3. Step 3: Cross multiply
    1,676.77x = 2,515.16 × 444.19
  4. Step 4: Simplify right side
    1,676.77x = 1,117,208.92
  5. Step 5: Solve for x
    x = 1,117,208.92/1,676.77
  6. Step 6: Final answer
    x = 666.29

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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.