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Finding the Fourth Proportional to 1,576.73, 2,366.10 and 918.60

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Solution

The fourth proportional to 1,576.73, 2,366.10 and 918.60 is: 1,378.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576.73 : 2,366.10 = 918.60 : x
  2. Step 2: Convert to fraction form
    1,576.73/2,366.10 = 918.60/x
  3. Step 3: Cross multiply
    1,576.73x = 2,366.10 × 918.60
  4. Step 4: Simplify right side
    1,576.73x = 2,173,499.46
  5. Step 5: Solve for x
    x = 2,173,499.46/1,576.73
  6. Step 6: Final answer
    x = 1,378.49

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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.