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Finding the Fourth Proportional to 45.02, 62.14 and 28.65

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Solution

The fourth proportional to 45.02, 62.14 and 28.65 is: 39.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.02 : 62.14 = 28.65 : x
  2. Step 2: Convert to fraction form
    45.02/62.14 = 28.65/x
  3. Step 3: Cross multiply
    45.02x = 62.14 × 28.65
  4. Step 4: Simplify right side
    45.02x = 1,780.31
  5. Step 5: Solve for x
    x = 1,780.31/45.02
  6. Step 6: Final answer
    x = 39.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.