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Finding the Fourth Proportional to 577.60, 809.45 and 577.60

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Solution

The fourth proportional to 577.60, 809.45 and 577.60 is: 809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.60 : 809.45 = 577.60 : x
  2. Step 2: Convert to fraction form
    577.60/809.45 = 577.60/x
  3. Step 3: Cross multiply
    577.60x = 809.45 × 577.60
  4. Step 4: Simplify right side
    577.60x = 467,538.32
  5. Step 5: Solve for x
    x = 467,538.32/577.60
  6. Step 6: Final answer
    x = 809.45

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.