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Finding the Fourth Proportional to 628.28, 867.02 and 352.28

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Solution

The fourth proportional to 628.28, 867.02 and 352.28 is: 486.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.28 : 867.02 = 352.28 : x
  2. Step 2: Convert to fraction form
    628.28/867.02 = 352.28/x
  3. Step 3: Cross multiply
    628.28x = 867.02 × 352.28
  4. Step 4: Simplify right side
    628.28x = 305,433.81
  5. Step 5: Solve for x
    x = 305,433.81/628.28
  6. Step 6: Final answer
    x = 486.14

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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.