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Finding the Fourth Proportional to 569.49, 785.80 and 359.70

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Solution

The fourth proportional to 569.49, 785.80 and 359.70 is: 496.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.49 : 785.80 = 359.70 : x
  2. Step 2: Convert to fraction form
    569.49/785.80 = 359.70/x
  3. Step 3: Cross multiply
    569.49x = 785.80 × 359.70
  4. Step 4: Simplify right side
    569.49x = 282,652.26
  5. Step 5: Solve for x
    x = 282,652.26/569.49
  6. Step 6: Final answer
    x = 496.33

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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.