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Finding the Fourth Proportional to 343.10, 473.34 and 210.28

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Solution

The fourth proportional to 343.10, 473.34 and 210.28 is: 290.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.10 : 473.34 = 210.28 : x
  2. Step 2: Convert to fraction form
    343.10/473.34 = 210.28/x
  3. Step 3: Cross multiply
    343.10x = 473.34 × 210.28
  4. Step 4: Simplify right side
    343.10x = 99,533.94
  5. Step 5: Solve for x
    x = 99,533.94/343.10
  6. Step 6: Final answer
    x = 290.10

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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.