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Finding the Fourth Proportional to 1,598.70, 2,398.40 and 674.69

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Solution

The fourth proportional to 1,598.70, 2,398.40 and 674.69 is: 1,012.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,598.70 : 2,398.40 = 674.69 : x
  2. Step 2: Convert to fraction form
    1,598.70/2,398.40 = 674.69/x
  3. Step 3: Cross multiply
    1,598.70x = 2,398.40 × 674.69
  4. Step 4: Simplify right side
    1,598.70x = 1,618,161.13
  5. Step 5: Solve for x
    x = 1,618,161.13/1,598.70
  6. Step 6: Final answer
    x = 1,012.17

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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.