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Finding the Fourth Proportional to 37.55, 56.07 and 30.77

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Solution

The fourth proportional to 37.55, 56.07 and 30.77 is: 45.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    37.55 : 56.07 = 30.77 : x
  2. Step 2: Convert to fraction form
    37.55/56.07 = 30.77/x
  3. Step 3: Cross multiply
    37.55x = 56.07 × 30.77
  4. Step 4: Simplify right side
    37.55x = 1,725.12
  5. Step 5: Solve for x
    x = 1,725.12/37.55
  6. Step 6: Final answer
    x = 45.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.