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Finding the Fourth Proportional to 578.76, 798.81 and 357.94

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Solution

The fourth proportional to 578.76, 798.81 and 357.94 is: 494.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.76 : 798.81 = 357.94 : x
  2. Step 2: Convert to fraction form
    578.76/798.81 = 357.94/x
  3. Step 3: Cross multiply
    578.76x = 798.81 × 357.94
  4. Step 4: Simplify right side
    578.76x = 285,926.05
  5. Step 5: Solve for x
    x = 285,926.05/578.76
  6. Step 6: Final answer
    x = 494.03

Related Problems

Find fourth proportional to 289.38, 399.41 and 178.97
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Double scale
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Similar ratio
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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.