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Finding the Fourth Proportional to 558.99, 836.87 and 518.49

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Solution

The fourth proportional to 558.99, 836.87 and 518.49 is: 776.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.99 : 836.87 = 518.49 : x
  2. Step 2: Convert to fraction form
    558.99/836.87 = 518.49/x
  3. Step 3: Cross multiply
    558.99x = 836.87 × 518.49
  4. Step 4: Simplify right side
    558.99x = 433,906.13
  5. Step 5: Solve for x
    x = 433,906.13/558.99
  6. Step 6: Final answer
    x = 776.23

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