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Finding the Fourth Proportional to 569.65, 786.69 and 429.54

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Solution

The fourth proportional to 569.65, 786.69 and 429.54 is: 593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.65 : 786.69 = 429.54 : x
  2. Step 2: Convert to fraction form
    569.65/786.69 = 429.54/x
  3. Step 3: Cross multiply
    569.65x = 786.69 × 429.54
  4. Step 4: Simplify right side
    569.65x = 337,912.67
  5. Step 5: Solve for x
    x = 337,912.67/569.65
  6. Step 6: Final answer
    x = 593.20

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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.