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Finding the Fourth Proportional to 620.00, 855.60 and 340.24

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Solution

The fourth proportional to 620.00, 855.60 and 340.24 is: 469.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.00 : 855.60 = 340.24 : x
  2. Step 2: Convert to fraction form
    620.00/855.60 = 340.24/x
  3. Step 3: Cross multiply
    620.00x = 855.60 × 340.24
  4. Step 4: Simplify right side
    620.00x = 291,107.21
  5. Step 5: Solve for x
    x = 291,107.21/620.00
  6. Step 6: Final answer
    x = 469.53

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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.