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Finding the Fourth Proportional to 573.72, 791.34 and 340.76

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Solution

The fourth proportional to 573.72, 791.34 and 340.76 is: 470.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.72 : 791.34 = 340.76 : x
  2. Step 2: Convert to fraction form
    573.72/791.34 = 340.76/x
  3. Step 3: Cross multiply
    573.72x = 791.34 × 340.76
  4. Step 4: Simplify right side
    573.72x = 269,657.02
  5. Step 5: Solve for x
    x = 269,657.02/573.72
  6. Step 6: Final answer
    x = 470.02

Related Problems

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Double scale
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1.5x scale

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.