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Finding the Fourth Proportional to 37.98, 56.64 and 37.02

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Solution

The fourth proportional to 37.98, 56.64 and 37.02 is: 55.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    37.98 : 56.64 = 37.02 : x
  2. Step 2: Convert to fraction form
    37.98/56.64 = 37.02/x
  3. Step 3: Cross multiply
    37.98x = 56.64 × 37.02
  4. Step 4: Simplify right side
    37.98x = 2,096.81
  5. Step 5: Solve for x
    x = 2,096.81/37.98
  6. Step 6: Final answer
    x = 55.21

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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.