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Finding the Fourth Proportional to 570.98, 788.09 and 477.56

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Solution

The fourth proportional to 570.98, 788.09 and 477.56 is: 659.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.98 : 788.09 = 477.56 : x
  2. Step 2: Convert to fraction form
    570.98/788.09 = 477.56/x
  3. Step 3: Cross multiply
    570.98x = 788.09 × 477.56
  4. Step 4: Simplify right side
    570.98x = 376,360.26
  5. Step 5: Solve for x
    x = 376,360.26/570.98
  6. Step 6: Final answer
    x = 659.15

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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.