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Finding the Fourth Proportional to 772.53, 1,064.50 and 734.86

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Solution

The fourth proportional to 772.53, 1,064.50 and 734.86 is: 1,012.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    772.53 : 1,064.50 = 734.86 : x
  2. Step 2: Convert to fraction form
    772.53/1,064.50 = 734.86/x
  3. Step 3: Cross multiply
    772.53x = 1,064.50 × 734.86
  4. Step 4: Simplify right side
    772.53x = 782,258.47
  5. Step 5: Solve for x
    x = 782,258.47/772.53
  6. Step 6: Final answer
    x = 1,012.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.