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Finding the Fourth Proportional to 1,277.27, 1,915.99 and 497.22

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Solution

The fourth proportional to 1,277.27, 1,915.99 and 497.22 is: 745.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.27 : 1,915.99 = 497.22 : x
  2. Step 2: Convert to fraction form
    1,277.27/1,915.99 = 497.22/x
  3. Step 3: Cross multiply
    1,277.27x = 1,915.99 × 497.22
  4. Step 4: Simplify right side
    1,277.27x = 952,672.99
  5. Step 5: Solve for x
    x = 952,672.99/1,277.27
  6. Step 6: Final answer
    x = 745.87

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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.