Home / 628.06-941.95-281.21

Finding the Fourth Proportional to 628.06, 941.95 and 281.21

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Solution

The fourth proportional to 628.06, 941.95 and 281.21 is: 421.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.06 : 941.95 = 281.21 : x
  2. Step 2: Convert to fraction form
    628.06/941.95 = 281.21/x
  3. Step 3: Cross multiply
    628.06x = 941.95 × 281.21
  4. Step 4: Simplify right side
    628.06x = 264,879.82
  5. Step 5: Solve for x
    x = 264,879.82/628.06
  6. Step 6: Final answer
    x = 421.74

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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.