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Finding the Fourth Proportional to 984.28, 1,476.42 and 335

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Solution

The fourth proportional to 984.28, 1,476.42 and 335 is: 502.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.28 : 1,476.42 = 335 : x
  2. Step 2: Convert to fraction form
    984.28/1,476.42 = 335/x
  3. Step 3: Cross multiply
    984.28x = 1,476.42 × 335
  4. Step 4: Simplify right side
    984.28x = 494,600.70
  5. Step 5: Solve for x
    x = 494,600.70/984.28
  6. Step 6: Final answer
    x = 502.50

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.