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Finding the Fourth Proportional to 1,062.88, 1,594.88 and 485.44

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Solution

The fourth proportional to 1,062.88, 1,594.88 and 485.44 is: 728.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062.88 : 1,594.88 = 485.44 : x
  2. Step 2: Convert to fraction form
    1,062.88/1,594.88 = 485.44/x
  3. Step 3: Cross multiply
    1,062.88x = 1,594.88 × 485.44
  4. Step 4: Simplify right side
    1,062.88x = 774,218.55
  5. Step 5: Solve for x
    x = 774,218.55/1,062.88
  6. Step 6: Final answer
    x = 728.42

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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.