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Finding the Fourth Proportional to 569.04, 786 and 382.88

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Solution

The fourth proportional to 569.04, 786 and 382.88 is: 528.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.04 : 786 = 382.88 : x
  2. Step 2: Convert to fraction form
    569.04/786 = 382.88/x
  3. Step 3: Cross multiply
    569.04x = 786 × 382.88
  4. Step 4: Simplify right side
    569.04x = 300,943.68
  5. Step 5: Solve for x
    x = 300,943.68/569.04
  6. Step 6: Final answer
    x = 528.86

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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.