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Finding the Fourth Proportional to 578.96, 868.98 and 383.42

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Solution

The fourth proportional to 578.96, 868.98 and 383.42 is: 575.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.96 : 868.98 = 383.42 : x
  2. Step 2: Convert to fraction form
    578.96/868.98 = 383.42/x
  3. Step 3: Cross multiply
    578.96x = 868.98 × 383.42
  4. Step 4: Simplify right side
    578.96x = 333,184.31
  5. Step 5: Solve for x
    x = 333,184.31/578.96
  6. Step 6: Final answer
    x = 575.49

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.