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Finding the Fourth Proportional to 45.26, 68.10 and 37.70

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Solution

The fourth proportional to 45.26, 68.10 and 37.70 is: 56.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.26 : 68.10 = 37.70 : x
  2. Step 2: Convert to fraction form
    45.26/68.10 = 37.70/x
  3. Step 3: Cross multiply
    45.26x = 68.10 × 37.70
  4. Step 4: Simplify right side
    45.26x = 2,567.37
  5. Step 5: Solve for x
    x = 2,567.37/45.26
  6. Step 6: Final answer
    x = 56.72

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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.