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Finding the Fourth Proportional to 579.02, 868.53 and 290.39

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Solution

The fourth proportional to 579.02, 868.53 and 290.39 is: 435.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.02 : 868.53 = 290.39 : x
  2. Step 2: Convert to fraction form
    579.02/868.53 = 290.39/x
  3. Step 3: Cross multiply
    579.02x = 868.53 × 290.39
  4. Step 4: Simplify right side
    579.02x = 252,208.08
  5. Step 5: Solve for x
    x = 252,208.08/579.02
  6. Step 6: Final answer
    x = 435.58

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.