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Finding the Fourth Proportional to 34.42, 51.90 and 30.46

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Solution

The fourth proportional to 34.42, 51.90 and 30.46 is: 45.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.42 : 51.90 = 30.46 : x
  2. Step 2: Convert to fraction form
    34.42/51.90 = 30.46/x
  3. Step 3: Cross multiply
    34.42x = 51.90 × 30.46
  4. Step 4: Simplify right side
    34.42x = 1,580.87
  5. Step 5: Solve for x
    x = 1,580.87/34.42
  6. Step 6: Final answer
    x = 45.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.