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Finding the Fourth Proportional to 1,476.56, 2,212.91 and 745.74

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Solution

The fourth proportional to 1,476.56, 2,212.91 and 745.74 is: 1,117.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,476.56 : 2,212.91 = 745.74 : x
  2. Step 2: Convert to fraction form
    1,476.56/2,212.91 = 745.74/x
  3. Step 3: Cross multiply
    1,476.56x = 2,212.91 × 745.74
  4. Step 4: Simplify right side
    1,476.56x = 1,650,255.50
  5. Step 5: Solve for x
    x = 1,650,255.50/1,476.56
  6. Step 6: Final answer
    x = 1,117.64

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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.