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Finding the Fourth Proportional to 569.00, 785.21 and 320.33

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Solution

The fourth proportional to 569.00, 785.21 and 320.33 is: 442.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.00 : 785.21 = 320.33 : x
  2. Step 2: Convert to fraction form
    569.00/785.21 = 320.33/x
  3. Step 3: Cross multiply
    569.00x = 785.21 × 320.33
  4. Step 4: Simplify right side
    569.00x = 251,526.68
  5. Step 5: Solve for x
    x = 251,526.68/569.00
  6. Step 6: Final answer
    x = 442.05

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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.