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Finding the Fourth Proportional to 575.79, 794.57 and 313.80

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Solution

The fourth proportional to 575.79, 794.57 and 313.80 is: 433.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.79 : 794.57 = 313.80 : x
  2. Step 2: Convert to fraction form
    575.79/794.57 = 313.80/x
  3. Step 3: Cross multiply
    575.79x = 794.57 × 313.80
  4. Step 4: Simplify right side
    575.79x = 249,336.07
  5. Step 5: Solve for x
    x = 249,336.07/575.79
  6. Step 6: Final answer
    x = 433.03

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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.