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Finding the Fourth Proportional to 1,223.07, 1,834.71 and 357.39

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Solution

The fourth proportional to 1,223.07, 1,834.71 and 357.39 is: 536.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223.07 : 1,834.71 = 357.39 : x
  2. Step 2: Convert to fraction form
    1,223.07/1,834.71 = 357.39/x
  3. Step 3: Cross multiply
    1,223.07x = 1,834.71 × 357.39
  4. Step 4: Simplify right side
    1,223.07x = 655,707.01
  5. Step 5: Solve for x
    x = 655,707.01/1,223.07
  6. Step 6: Final answer
    x = 536.12

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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.