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Finding the Fourth Proportional to 894.55, 1,233.90 and 579.69

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Solution

The fourth proportional to 894.55, 1,233.90 and 579.69 is: 799.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.55 : 1,233.90 = 579.69 : x
  2. Step 2: Convert to fraction form
    894.55/1,233.90 = 579.69/x
  3. Step 3: Cross multiply
    894.55x = 1,233.90 × 579.69
  4. Step 4: Simplify right side
    894.55x = 715,279.49
  5. Step 5: Solve for x
    x = 715,279.49/894.55
  6. Step 6: Final answer
    x = 799.60

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.