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Finding the Fourth Proportional to 474.36, 655.20 and 343.16

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Solution

The fourth proportional to 474.36, 655.20 and 343.16 is: 473.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.36 : 655.20 = 343.16 : x
  2. Step 2: Convert to fraction form
    474.36/655.20 = 343.16/x
  3. Step 3: Cross multiply
    474.36x = 655.20 × 343.16
  4. Step 4: Simplify right side
    474.36x = 224,838.43
  5. Step 5: Solve for x
    x = 224,838.43/474.36
  6. Step 6: Final answer
    x = 473.98

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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.