Home / 628.06-942.31-281.36

Finding the Fourth Proportional to 628.06, 942.31 and 281.36

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Solution

The fourth proportional to 628.06, 942.31 and 281.36 is: 422.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.06 : 942.31 = 281.36 : x
  2. Step 2: Convert to fraction form
    628.06/942.31 = 281.36/x
  3. Step 3: Cross multiply
    628.06x = 942.31 × 281.36
  4. Step 4: Simplify right side
    628.06x = 265,128.34
  5. Step 5: Solve for x
    x = 265,128.34/628.06
  6. Step 6: Final answer
    x = 422.14

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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.