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Finding the Fourth Proportional to 405.81, 560.07 and 295.65

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Solution

The fourth proportional to 405.81, 560.07 and 295.65 is: 408.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.81 : 560.07 = 295.65 : x
  2. Step 2: Convert to fraction form
    405.81/560.07 = 295.65/x
  3. Step 3: Cross multiply
    405.81x = 560.07 × 295.65
  4. Step 4: Simplify right side
    405.81x = 165,584.70
  5. Step 5: Solve for x
    x = 165,584.70/405.81
  6. Step 6: Final answer
    x = 408.04

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.