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Finding the Fourth Proportional to 845.20, 1,166.35 and 472.22

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Solution

The fourth proportional to 845.20, 1,166.35 and 472.22 is: 651.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.20 : 1,166.35 = 472.22 : x
  2. Step 2: Convert to fraction form
    845.20/1,166.35 = 472.22/x
  3. Step 3: Cross multiply
    845.20x = 1,166.35 × 472.22
  4. Step 4: Simplify right side
    845.20x = 550,770.40
  5. Step 5: Solve for x
    x = 550,770.40/845.20
  6. Step 6: Final answer
    x = 651.65

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Double scale
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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.