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Finding the Fourth Proportional to 578.75, 868.02 and 189.03

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Solution

The fourth proportional to 578.75, 868.02 and 189.03 is: 283.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.75 : 868.02 = 189.03 : x
  2. Step 2: Convert to fraction form
    578.75/868.02 = 189.03/x
  3. Step 3: Cross multiply
    578.75x = 868.02 × 189.03
  4. Step 4: Simplify right side
    578.75x = 164,081.82
  5. Step 5: Solve for x
    x = 164,081.82/578.75
  6. Step 6: Final answer
    x = 283.51

Related Problems

Find fourth proportional to 289.38, 434.01 and 94.52
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.