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Finding the Fourth Proportional to 434.70, 652.38 and 161.05

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Solution

The fourth proportional to 434.70, 652.38 and 161.05 is: 241.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.70 : 652.38 = 161.05 : x
  2. Step 2: Convert to fraction form
    434.70/652.38 = 161.05/x
  3. Step 3: Cross multiply
    434.70x = 652.38 × 161.05
  4. Step 4: Simplify right side
    434.70x = 105,065.80
  5. Step 5: Solve for x
    x = 105,065.80/434.70
  6. Step 6: Final answer
    x = 241.70

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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.