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Finding the Fourth Proportional to 434.58, 651.24 and 271.80

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Solution

The fourth proportional to 434.58, 651.24 and 271.80 is: 407.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.58 : 651.24 = 271.80 : x
  2. Step 2: Convert to fraction form
    434.58/651.24 = 271.80/x
  3. Step 3: Cross multiply
    434.58x = 651.24 × 271.80
  4. Step 4: Simplify right side
    434.58x = 177,007.03
  5. Step 5: Solve for x
    x = 177,007.03/434.58
  6. Step 6: Final answer
    x = 407.31

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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.