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Finding the Fourth Proportional to 836.22, 1,152.72 and 555.96

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Solution

The fourth proportional to 836.22, 1,152.72 and 555.96 is: 766.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.22 : 1,152.72 = 555.96 : x
  2. Step 2: Convert to fraction form
    836.22/1,152.72 = 555.96/x
  3. Step 3: Cross multiply
    836.22x = 1,152.72 × 555.96
  4. Step 4: Simplify right side
    836.22x = 640,866.21
  5. Step 5: Solve for x
    x = 640,866.21/836.22
  6. Step 6: Final answer
    x = 766.38

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.