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Finding the Fourth Proportional to 1,337.70, 2,003.14 and 990.52

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Solution

The fourth proportional to 1,337.70, 2,003.14 and 990.52 is: 1,483.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,337.70 : 2,003.14 = 990.52 : x
  2. Step 2: Convert to fraction form
    1,337.70/2,003.14 = 990.52/x
  3. Step 3: Cross multiply
    1,337.70x = 2,003.14 × 990.52
  4. Step 4: Simplify right side
    1,337.70x = 1,984,150.23
  5. Step 5: Solve for x
    x = 1,984,150.23/1,337.70
  6. Step 6: Final answer
    x = 1,483.26

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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.