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Finding the Fourth Proportional to 45.04, 67.38 and 28.93

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Solution

The fourth proportional to 45.04, 67.38 and 28.93 is: 43.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.04 : 67.38 = 28.93 : x
  2. Step 2: Convert to fraction form
    45.04/67.38 = 28.93/x
  3. Step 3: Cross multiply
    45.04x = 67.38 × 28.93
  4. Step 4: Simplify right side
    45.04x = 1,949.30
  5. Step 5: Solve for x
    x = 1,949.30/45.04
  6. Step 6: Final answer
    x = 43.28

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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.