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Finding the Fourth Proportional to 900.66, 1,351.23 and 490.14

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Solution

The fourth proportional to 900.66, 1,351.23 and 490.14 is: 735.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.66 : 1,351.23 = 490.14 : x
  2. Step 2: Convert to fraction form
    900.66/1,351.23 = 490.14/x
  3. Step 3: Cross multiply
    900.66x = 1,351.23 × 490.14
  4. Step 4: Simplify right side
    900.66x = 662,291.87
  5. Step 5: Solve for x
    x = 662,291.87/900.66
  6. Step 6: Final answer
    x = 735.34

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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.