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Finding the Fourth Proportional to 904.33, 1,358.31 and 539.83

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Solution

The fourth proportional to 904.33, 1,358.31 and 539.83 is: 810.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.33 : 1,358.31 = 539.83 : x
  2. Step 2: Convert to fraction form
    904.33/1,358.31 = 539.83/x
  3. Step 3: Cross multiply
    904.33x = 1,358.31 × 539.83
  4. Step 4: Simplify right side
    904.33x = 733,256.49
  5. Step 5: Solve for x
    x = 733,256.49/904.33
  6. Step 6: Final answer
    x = 810.83

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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.