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Finding the Fourth Proportional to 617.01, 850.78 and 558.69

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Solution

The fourth proportional to 617.01, 850.78 and 558.69 is: 770.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.01 : 850.78 = 558.69 : x
  2. Step 2: Convert to fraction form
    617.01/850.78 = 558.69/x
  3. Step 3: Cross multiply
    617.01x = 850.78 × 558.69
  4. Step 4: Simplify right side
    617.01x = 475,322.28
  5. Step 5: Solve for x
    x = 475,322.28/617.01
  6. Step 6: Final answer
    x = 770.36

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