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Finding the Fourth Proportional to 768.42, 1,150.90 and 593.86

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Solution

The fourth proportional to 768.42, 1,150.90 and 593.86 is: 889.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    768.42 : 1,150.90 = 593.86 : x
  2. Step 2: Convert to fraction form
    768.42/1,150.90 = 593.86/x
  3. Step 3: Cross multiply
    768.42x = 1,150.90 × 593.86
  4. Step 4: Simplify right side
    768.42x = 683,473.47
  5. Step 5: Solve for x
    x = 683,473.47/768.42
  6. Step 6: Final answer
    x = 889.45

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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.