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Finding the Fourth Proportional to 528.15, 791.31 and 373.81

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Solution

The fourth proportional to 528.15, 791.31 and 373.81 is: 560.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.15 : 791.31 = 373.81 : x
  2. Step 2: Convert to fraction form
    528.15/791.31 = 373.81/x
  3. Step 3: Cross multiply
    528.15x = 791.31 × 373.81
  4. Step 4: Simplify right side
    528.15x = 295,797.72
  5. Step 5: Solve for x
    x = 295,797.72/528.15
  6. Step 6: Final answer
    x = 560.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.