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Finding the Fourth Proportional to 828.06, 1,144.02 and 705.12

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Solution

The fourth proportional to 828.06, 1,144.02 and 705.12 is: 974.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    828.06 : 1,144.02 = 705.12 : x
  2. Step 2: Convert to fraction form
    828.06/1,144.02 = 705.12/x
  3. Step 3: Cross multiply
    828.06x = 1,144.02 × 705.12
  4. Step 4: Simplify right side
    828.06x = 806,671.38
  5. Step 5: Solve for x
    x = 806,671.38/828.06
  6. Step 6: Final answer
    x = 974.17

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.