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Finding the Fourth Proportional to 473.38, 653.34 and 274.18

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Solution

The fourth proportional to 473.38, 653.34 and 274.18 is: 378.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.38 : 653.34 = 274.18 : x
  2. Step 2: Convert to fraction form
    473.38/653.34 = 274.18/x
  3. Step 3: Cross multiply
    473.38x = 653.34 × 274.18
  4. Step 4: Simplify right side
    473.38x = 179,132.76
  5. Step 5: Solve for x
    x = 179,132.76/473.38
  6. Step 6: Final answer
    x = 378.41

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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.