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Finding the Fourth Proportional to 592.64, 889.12 and 485.44

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Solution

The fourth proportional to 592.64, 889.12 and 485.44 is: 728.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    592.64 : 889.12 = 485.44 : x
  2. Step 2: Convert to fraction form
    592.64/889.12 = 485.44/x
  3. Step 3: Cross multiply
    592.64x = 889.12 × 485.44
  4. Step 4: Simplify right side
    592.64x = 431,614.41
  5. Step 5: Solve for x
    x = 431,614.41/592.64
  6. Step 6: Final answer
    x = 728.29

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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.