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Finding the Fourth Proportional to 405.14, 604.15 and 382.91

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Solution

The fourth proportional to 405.14, 604.15 and 382.91 is: 571.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.14 : 604.15 = 382.91 : x
  2. Step 2: Convert to fraction form
    405.14/604.15 = 382.91/x
  3. Step 3: Cross multiply
    405.14x = 604.15 × 382.91
  4. Step 4: Simplify right side
    405.14x = 231,335.08
  5. Step 5: Solve for x
    x = 231,335.08/405.14
  6. Step 6: Final answer
    x = 571.00

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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.