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Finding the Fourth Proportional to 344, 515.98 and 87.50

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Solution

The fourth proportional to 344, 515.98 and 87.50 is: 131.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    344 : 515.98 = 87.50 : x
  2. Step 2: Convert to fraction form
    344/515.98 = 87.50/x
  3. Step 3: Cross multiply
    344x = 515.98 × 87.50
  4. Step 4: Simplify right side
    344x = 45,148.25
  5. Step 5: Solve for x
    x = 45,148.25/344
  6. Step 6: Final answer
    x = 131.24

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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.