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Finding the Fourth Proportional to 466.12, 695.39 and 389.56

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Solution

The fourth proportional to 466.12, 695.39 and 389.56 is: 581.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.12 : 695.39 = 389.56 : x
  2. Step 2: Convert to fraction form
    466.12/695.39 = 389.56/x
  3. Step 3: Cross multiply
    466.12x = 695.39 × 389.56
  4. Step 4: Simplify right side
    466.12x = 270,896.13
  5. Step 5: Solve for x
    x = 270,896.13/466.12
  6. Step 6: Final answer
    x = 581.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.