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Finding the Fourth Proportional to 1,330.75, 1,996.53 and 465.06

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Solution

The fourth proportional to 1,330.75, 1,996.53 and 465.06 is: 697.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.75 : 1,996.53 = 465.06 : x
  2. Step 2: Convert to fraction form
    1,330.75/1,996.53 = 465.06/x
  3. Step 3: Cross multiply
    1,330.75x = 1,996.53 × 465.06
  4. Step 4: Simplify right side
    1,330.75x = 928,506.24
  5. Step 5: Solve for x
    x = 928,506.24/1,330.75
  6. Step 6: Final answer
    x = 697.73

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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.