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Finding the Fourth Proportional to 405.89, 560.25 and 293.94

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Solution

The fourth proportional to 405.89, 560.25 and 293.94 is: 405.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.89 : 560.25 = 293.94 : x
  2. Step 2: Convert to fraction form
    405.89/560.25 = 293.94/x
  3. Step 3: Cross multiply
    405.89x = 560.25 × 293.94
  4. Step 4: Simplify right side
    405.89x = 164,679.89
  5. Step 5: Solve for x
    x = 164,679.89/405.89
  6. Step 6: Final answer
    x = 405.73

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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.