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Finding the Fourth Proportional to 628.04, 867 and 441.69

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Solution

The fourth proportional to 628.04, 867 and 441.69 is: 609.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.04 : 867 = 441.69 : x
  2. Step 2: Convert to fraction form
    628.04/867 = 441.69/x
  3. Step 3: Cross multiply
    628.04x = 867 × 441.69
  4. Step 4: Simplify right side
    628.04x = 382,945.23
  5. Step 5: Solve for x
    x = 382,945.23/628.04
  6. Step 6: Final answer
    x = 609.75

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1.5x scale

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.