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Finding the Fourth Proportional to 1,475.33, 2,214.36 and 745.42

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Solution

The fourth proportional to 1,475.33, 2,214.36 and 745.42 is: 1,118.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.33 : 2,214.36 = 745.42 : x
  2. Step 2: Convert to fraction form
    1,475.33/2,214.36 = 745.42/x
  3. Step 3: Cross multiply
    1,475.33x = 2,214.36 × 745.42
  4. Step 4: Simplify right side
    1,475.33x = 1,650,617.16
  5. Step 5: Solve for x
    x = 1,650,617.16/1,475.33
  6. Step 6: Final answer
    x = 1,118.82

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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.