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Finding the Fourth Proportional to 850.32, 1,173.11 and 555.48

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Solution

The fourth proportional to 850.32, 1,173.11 and 555.48 is: 766.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.32 : 1,173.11 = 555.48 : x
  2. Step 2: Convert to fraction form
    850.32/1,173.11 = 555.48/x
  3. Step 3: Cross multiply
    850.32x = 1,173.11 × 555.48
  4. Step 4: Simplify right side
    850.32x = 651,636.37
  5. Step 5: Solve for x
    x = 651,636.37/850.32
  6. Step 6: Final answer
    x = 766.34

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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.