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Finding the Fourth Proportional to 1,023.69, 1,412.26 and 603.87

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Solution

The fourth proportional to 1,023.69, 1,412.26 and 603.87 is: 833.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,023.69 : 1,412.26 = 603.87 : x
  2. Step 2: Convert to fraction form
    1,023.69/1,412.26 = 603.87/x
  3. Step 3: Cross multiply
    1,023.69x = 1,412.26 × 603.87
  4. Step 4: Simplify right side
    1,023.69x = 852,821.45
  5. Step 5: Solve for x
    x = 852,821.45/1,023.69
  6. Step 6: Final answer
    x = 833.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.