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Finding the Fourth Proportional to 465.40, 698.19 and 234.10

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Solution

The fourth proportional to 465.40, 698.19 and 234.10 is: 351.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.40 : 698.19 = 234.10 : x
  2. Step 2: Convert to fraction form
    465.40/698.19 = 234.10/x
  3. Step 3: Cross multiply
    465.40x = 698.19 × 234.10
  4. Step 4: Simplify right side
    465.40x = 163,446.28
  5. Step 5: Solve for x
    x = 163,446.28/465.40
  6. Step 6: Final answer
    x = 351.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.