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Finding the Fourth Proportional to 569.55, 853.78 and 223.11

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Solution

The fourth proportional to 569.55, 853.78 and 223.11 is: 334.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.55 : 853.78 = 223.11 : x
  2. Step 2: Convert to fraction form
    569.55/853.78 = 223.11/x
  3. Step 3: Cross multiply
    569.55x = 853.78 × 223.11
  4. Step 4: Simplify right side
    569.55x = 190,486.86
  5. Step 5: Solve for x
    x = 190,486.86/569.55
  6. Step 6: Final answer
    x = 334.45

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.