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Finding the Fourth Proportional to 558.50, 837.34 and 284.38

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Solution

The fourth proportional to 558.50, 837.34 and 284.38 is: 426.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.50 : 837.34 = 284.38 : x
  2. Step 2: Convert to fraction form
    558.50/837.34 = 284.38/x
  3. Step 3: Cross multiply
    558.50x = 837.34 × 284.38
  4. Step 4: Simplify right side
    558.50x = 238,119.94
  5. Step 5: Solve for x
    x = 238,119.94/558.50
  6. Step 6: Final answer
    x = 426.36

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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.