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Finding the Fourth Proportional to 558.95, 838.02 and 281.12

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Solution

The fourth proportional to 558.95, 838.02 and 281.12 is: 421.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.95 : 838.02 = 281.12 : x
  2. Step 2: Convert to fraction form
    558.95/838.02 = 281.12/x
  3. Step 3: Cross multiply
    558.95x = 838.02 × 281.12
  4. Step 4: Simplify right side
    558.95x = 235,584.97
  5. Step 5: Solve for x
    x = 235,584.97/558.95
  6. Step 6: Final answer
    x = 421.48

Related Problems

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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.