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Finding the Fourth Proportional to 1,677.26, 2,515.86 and 444.63

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Solution

The fourth proportional to 1,677.26, 2,515.86 and 444.63 is: 666.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.26 : 2,515.86 = 444.63 : x
  2. Step 2: Convert to fraction form
    1,677.26/2,515.86 = 444.63/x
  3. Step 3: Cross multiply
    1,677.26x = 2,515.86 × 444.63
  4. Step 4: Simplify right side
    1,677.26x = 1,118,626.83
  5. Step 5: Solve for x
    x = 1,118,626.83/1,677.26
  6. Step 6: Final answer
    x = 666.94

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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.