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Finding the Fourth Proportional to 890.17, 1,334.39 and 500.36

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Solution

The fourth proportional to 890.17, 1,334.39 and 500.36 is: 750.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.17 : 1,334.39 = 500.36 : x
  2. Step 2: Convert to fraction form
    890.17/1,334.39 = 500.36/x
  3. Step 3: Cross multiply
    890.17x = 1,334.39 × 500.36
  4. Step 4: Simplify right side
    890.17x = 667,666.21
  5. Step 5: Solve for x
    x = 667,666.21/890.17
  6. Step 6: Final answer
    x = 750.05

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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.