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Finding the Fourth Proportional to 890.09, 1,334.93 and 369.93

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Solution

The fourth proportional to 890.09, 1,334.93 and 369.93 is: 554.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.09 : 1,334.93 = 369.93 : x
  2. Step 2: Convert to fraction form
    890.09/1,334.93 = 369.93/x
  3. Step 3: Cross multiply
    890.09x = 1,334.93 × 369.93
  4. Step 4: Simplify right side
    890.09x = 493,828.81
  5. Step 5: Solve for x
    x = 493,828.81/890.09
  6. Step 6: Final answer
    x = 554.81

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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.