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Finding the Fourth Proportional to 520.36, 779.09 and 373.68

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Solution

The fourth proportional to 520.36, 779.09 and 373.68 is: 559.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.36 : 779.09 = 373.68 : x
  2. Step 2: Convert to fraction form
    520.36/779.09 = 373.68/x
  3. Step 3: Cross multiply
    520.36x = 779.09 × 373.68
  4. Step 4: Simplify right side
    520.36x = 291,128.48
  5. Step 5: Solve for x
    x = 291,128.48/520.36
  6. Step 6: Final answer
    x = 559.48

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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.