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Finding the Fourth Proportional to 434.20, 651.22 and 160.15

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Solution

The fourth proportional to 434.20, 651.22 and 160.15 is: 240.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.20 : 651.22 = 160.15 : x
  2. Step 2: Convert to fraction form
    434.20/651.22 = 160.15/x
  3. Step 3: Cross multiply
    434.20x = 651.22 × 160.15
  4. Step 4: Simplify right side
    434.20x = 104,292.88
  5. Step 5: Solve for x
    x = 104,292.88/434.20
  6. Step 6: Final answer
    x = 240.20

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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.