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Finding the Fourth Proportional to 428.00, 590.43 and 262.16

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Solution

The fourth proportional to 428.00, 590.43 and 262.16 is: 361.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    428.00 : 590.43 = 262.16 : x
  2. Step 2: Convert to fraction form
    428.00/590.43 = 262.16/x
  3. Step 3: Cross multiply
    428.00x = 590.43 × 262.16
  4. Step 4: Simplify right side
    428.00x = 154,784.18
  5. Step 5: Solve for x
    x = 154,784.18/428.00
  6. Step 6: Final answer
    x = 361.65

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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.