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Finding the Fourth Proportional to 570.28, 788.52 and 440.32

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Solution

The fourth proportional to 570.28, 788.52 and 440.32 is: 608.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.28 : 788.52 = 440.32 : x
  2. Step 2: Convert to fraction form
    570.28/788.52 = 440.32/x
  3. Step 3: Cross multiply
    570.28x = 788.52 × 440.32
  4. Step 4: Simplify right side
    570.28x = 347,201.13
  5. Step 5: Solve for x
    x = 347,201.13/570.28
  6. Step 6: Final answer
    x = 608.83

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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.