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Finding the Fourth Proportional to 391.47, 587.27 and 175.07

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Solution

The fourth proportional to 391.47, 587.27 and 175.07 is: 262.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    391.47 : 587.27 = 175.07 : x
  2. Step 2: Convert to fraction form
    391.47/587.27 = 175.07/x
  3. Step 3: Cross multiply
    391.47x = 587.27 × 175.07
  4. Step 4: Simplify right side
    391.47x = 102,810.86
  5. Step 5: Solve for x
    x = 102,810.86/391.47
  6. Step 6: Final answer
    x = 262.63

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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.