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Finding the Fourth Proportional to 313.46, 432.59 and 173.58

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Solution

The fourth proportional to 313.46, 432.59 and 173.58 is: 239.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.46 : 432.59 = 173.58 : x
  2. Step 2: Convert to fraction form
    313.46/432.59 = 173.58/x
  3. Step 3: Cross multiply
    313.46x = 432.59 × 173.58
  4. Step 4: Simplify right side
    313.46x = 75,086.48
  5. Step 5: Solve for x
    x = 75,086.48/313.46
  6. Step 6: Final answer
    x = 239.54

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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.