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Finding the Fourth Proportional to 342.35, 472.28 and 224.25

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Solution

The fourth proportional to 342.35, 472.28 and 224.25 is: 309.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.35 : 472.28 = 224.25 : x
  2. Step 2: Convert to fraction form
    342.35/472.28 = 224.25/x
  3. Step 3: Cross multiply
    342.35x = 472.28 × 224.25
  4. Step 4: Simplify right side
    342.35x = 105,907.67
  5. Step 5: Solve for x
    x = 105,907.67/342.35
  6. Step 6: Final answer
    x = 309.36

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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.