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Finding the Fourth Proportional to 428.71, 591.62 and 232.22

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Solution

The fourth proportional to 428.71, 591.62 and 232.22 is: 320.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    428.71 : 591.62 = 232.22 : x
  2. Step 2: Convert to fraction form
    428.71/591.62 = 232.22/x
  3. Step 3: Cross multiply
    428.71x = 591.62 × 232.22
  4. Step 4: Simplify right side
    428.71x = 137,386.00
  5. Step 5: Solve for x
    x = 137,386.00/428.71
  6. Step 6: Final answer
    x = 320.46

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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.