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Finding the Fourth Proportional to 575.12, 794.40 and 459.60

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Solution

The fourth proportional to 575.12, 794.40 and 459.60 is: 634.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.12 : 794.40 = 459.60 : x
  2. Step 2: Convert to fraction form
    575.12/794.40 = 459.60/x
  3. Step 3: Cross multiply
    575.12x = 794.40 × 459.60
  4. Step 4: Simplify right side
    575.12x = 365,106.24
  5. Step 5: Solve for x
    x = 365,106.24/575.12
  6. Step 6: Final answer
    x = 634.83

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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.