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Finding the Fourth Proportional to 736.77, 1,016.70 and 422.01

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Solution

The fourth proportional to 736.77, 1,016.70 and 422.01 is: 582.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.77 : 1,016.70 = 422.01 : x
  2. Step 2: Convert to fraction form
    736.77/1,016.70 = 422.01/x
  3. Step 3: Cross multiply
    736.77x = 1,016.70 × 422.01
  4. Step 4: Simplify right side
    736.77x = 429,057.57
  5. Step 5: Solve for x
    x = 429,057.57/736.77
  6. Step 6: Final answer
    x = 582.35

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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.