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Finding the Fourth Proportional to 342.89, 473.03 and 210.07

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Solution

The fourth proportional to 342.89, 473.03 and 210.07 is: 289.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.89 : 473.03 = 210.07 : x
  2. Step 2: Convert to fraction form
    342.89/473.03 = 210.07/x
  3. Step 3: Cross multiply
    342.89x = 473.03 × 210.07
  4. Step 4: Simplify right side
    342.89x = 99,367.18
  5. Step 5: Solve for x
    x = 99,367.18/342.89
  6. Step 6: Final answer
    x = 289.79

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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.