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Finding the Fourth Proportional to 566.28, 780.40 and 550.48

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Solution

The fourth proportional to 566.28, 780.40 and 550.48 is: 758.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.28 : 780.40 = 550.48 : x
  2. Step 2: Convert to fraction form
    566.28/780.40 = 550.48/x
  3. Step 3: Cross multiply
    566.28x = 780.40 × 550.48
  4. Step 4: Simplify right side
    566.28x = 429,594.59
  5. Step 5: Solve for x
    x = 429,594.59/566.28
  6. Step 6: Final answer
    x = 758.63

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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.