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Finding the Fourth Proportional to 984.04, 1,357.94 and 635.08

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Solution

The fourth proportional to 984.04, 1,357.94 and 635.08 is: 876.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.04 : 1,357.94 = 635.08 : x
  2. Step 2: Convert to fraction form
    984.04/1,357.94 = 635.08/x
  3. Step 3: Cross multiply
    984.04x = 1,357.94 × 635.08
  4. Step 4: Simplify right side
    984.04x = 862,400.54
  5. Step 5: Solve for x
    x = 862,400.54/984.04
  6. Step 6: Final answer
    x = 876.39

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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.