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Finding the Fourth Proportional to 1,122.95, 1,684.63 and 506.95

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Solution

The fourth proportional to 1,122.95, 1,684.63 and 506.95 is: 760.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.95 : 1,684.63 = 506.95 : x
  2. Step 2: Convert to fraction form
    1,122.95/1,684.63 = 506.95/x
  3. Step 3: Cross multiply
    1,122.95x = 1,684.63 × 506.95
  4. Step 4: Simplify right side
    1,122.95x = 854,019.60
  5. Step 5: Solve for x
    x = 854,019.60/1,122.95
  6. Step 6: Final answer
    x = 760.51

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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.