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Finding the Fourth Proportional to 890.86, 1,333.04 and 525.82

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Solution

The fourth proportional to 890.86, 1,333.04 and 525.82 is: 786.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.86 : 1,333.04 = 525.82 : x
  2. Step 2: Convert to fraction form
    890.86/1,333.04 = 525.82/x
  3. Step 3: Cross multiply
    890.86x = 1,333.04 × 525.82
  4. Step 4: Simplify right side
    890.86x = 700,939.09
  5. Step 5: Solve for x
    x = 700,939.09/890.86
  6. Step 6: Final answer
    x = 786.81

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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.