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Finding the Fourth Proportional to 297.48, 405.08 and 293.21

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Solution

The fourth proportional to 297.48, 405.08 and 293.21 is: 399.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.48 : 405.08 = 293.21 : x
  2. Step 2: Convert to fraction form
    297.48/405.08 = 293.21/x
  3. Step 3: Cross multiply
    297.48x = 405.08 × 293.21
  4. Step 4: Simplify right side
    297.48x = 118,770.02
  5. Step 5: Solve for x
    x = 118,770.02/297.48
  6. Step 6: Final answer
    x = 399.25

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.