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Finding the Fourth Proportional to 701.70, 970.11 and 672.18

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Solution

The fourth proportional to 701.70, 970.11 and 672.18 is: 929.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.70 : 970.11 = 672.18 : x
  2. Step 2: Convert to fraction form
    701.70/970.11 = 672.18/x
  3. Step 3: Cross multiply
    701.70x = 970.11 × 672.18
  4. Step 4: Simplify right side
    701.70x = 652,088.54
  5. Step 5: Solve for x
    x = 652,088.54/701.70
  6. Step 6: Final answer
    x = 929.30

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Double scale
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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.