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Finding the Fourth Proportional to 1,576.61, 2,364.60 and 480.98

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Solution

The fourth proportional to 1,576.61, 2,364.60 and 480.98 is: 721.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576.61 : 2,364.60 = 480.98 : x
  2. Step 2: Convert to fraction form
    1,576.61/2,364.60 = 480.98/x
  3. Step 3: Cross multiply
    1,576.61x = 2,364.60 × 480.98
  4. Step 4: Simplify right side
    1,576.61x = 1,137,331.22
  5. Step 5: Solve for x
    x = 1,137,331.22/1,576.61
  6. Step 6: Final answer
    x = 721.38

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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.