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Finding the Fourth Proportional to 820.01, 1,131.77 and 466.09

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Solution

The fourth proportional to 820.01, 1,131.77 and 466.09 is: 643.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    820.01 : 1,131.77 = 466.09 : x
  2. Step 2: Convert to fraction form
    820.01/1,131.77 = 466.09/x
  3. Step 3: Cross multiply
    820.01x = 1,131.77 × 466.09
  4. Step 4: Simplify right side
    820.01x = 527,506.68
  5. Step 5: Solve for x
    x = 527,506.68/820.01
  6. Step 6: Final answer
    x = 643.29

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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.