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Finding the Fourth Proportional to 568.56, 782.60 and 509.34

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Solution

The fourth proportional to 568.56, 782.60 and 509.34 is: 701.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.56 : 782.60 = 509.34 : x
  2. Step 2: Convert to fraction form
    568.56/782.60 = 509.34/x
  3. Step 3: Cross multiply
    568.56x = 782.60 × 509.34
  4. Step 4: Simplify right side
    568.56x = 398,606.94
  5. Step 5: Solve for x
    x = 398,606.94/568.56
  6. Step 6: Final answer
    x = 701.08

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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.