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Finding the Fourth Proportional to 774.51, 1,067.96 and 525.39

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Solution

The fourth proportional to 774.51, 1,067.96 and 525.39 is: 724.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    774.51 : 1,067.96 = 525.39 : x
  2. Step 2: Convert to fraction form
    774.51/1,067.96 = 525.39/x
  3. Step 3: Cross multiply
    774.51x = 1,067.96 × 525.39
  4. Step 4: Simplify right side
    774.51x = 561,096.43
  5. Step 5: Solve for x
    x = 561,096.43/774.51
  6. Step 6: Final answer
    x = 724.46

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1.5x scale

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.