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Finding the Fourth Proportional to 428.10, 591.93 and 373.43

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Solution

The fourth proportional to 428.10, 591.93 and 373.43 is: 516.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    428.10 : 591.93 = 373.43 : x
  2. Step 2: Convert to fraction form
    428.10/591.93 = 373.43/x
  3. Step 3: Cross multiply
    428.10x = 591.93 × 373.43
  4. Step 4: Simplify right side
    428.10x = 221,041.46
  5. Step 5: Solve for x
    x = 221,041.46/428.10
  6. Step 6: Final answer
    x = 516.33

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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.