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Finding the Fourth Proportional to 309.52, 427.62 and 293.32

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Solution

The fourth proportional to 309.52, 427.62 and 293.32 is: 405.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    309.52 : 427.62 = 293.32 : x
  2. Step 2: Convert to fraction form
    309.52/427.62 = 293.32/x
  3. Step 3: Cross multiply
    309.52x = 427.62 × 293.32
  4. Step 4: Simplify right side
    309.52x = 125,429.50
  5. Step 5: Solve for x
    x = 125,429.50/309.52
  6. Step 6: Final answer
    x = 405.24

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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.