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Finding the Fourth Proportional to 701.94, 969.12 and 628.13

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Solution

The fourth proportional to 701.94, 969.12 and 628.13 is: 867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.94 : 969.12 = 628.13 : x
  2. Step 2: Convert to fraction form
    701.94/969.12 = 628.13/x
  3. Step 3: Cross multiply
    701.94x = 969.12 × 628.13
  4. Step 4: Simplify right side
    701.94x = 608,728.50
  5. Step 5: Solve for x
    x = 608,728.50/701.94
  6. Step 6: Final answer
    x = 867.21

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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.