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Finding the Fourth Proportional to 569.96, 786.79 and 383.56

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Solution

The fourth proportional to 569.96, 786.79 and 383.56 is: 529.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.96 : 786.79 = 383.56 : x
  2. Step 2: Convert to fraction form
    569.96/786.79 = 383.56/x
  3. Step 3: Cross multiply
    569.96x = 786.79 × 383.56
  4. Step 4: Simplify right side
    569.96x = 301,781.17
  5. Step 5: Solve for x
    x = 301,781.17/569.96
  6. Step 6: Final answer
    x = 529.48

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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.