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Finding the Fourth Proportional to 45.37, 62.58 and 31.56

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Solution

The fourth proportional to 45.37, 62.58 and 31.56 is: 43.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.37 : 62.58 = 31.56 : x
  2. Step 2: Convert to fraction form
    45.37/62.58 = 31.56/x
  3. Step 3: Cross multiply
    45.37x = 62.58 × 31.56
  4. Step 4: Simplify right side
    45.37x = 1,975.02
  5. Step 5: Solve for x
    x = 1,975.02/45.37
  6. Step 6: Final answer
    x = 43.53

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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.