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Finding the Fourth Proportional to 620.25, 930.37 and 187.50

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Solution

The fourth proportional to 620.25, 930.37 and 187.50 is: 281.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.25 : 930.37 = 187.50 : x
  2. Step 2: Convert to fraction form
    620.25/930.37 = 187.50/x
  3. Step 3: Cross multiply
    620.25x = 930.37 × 187.50
  4. Step 4: Simplify right side
    620.25x = 174,444.38
  5. Step 5: Solve for x
    x = 174,444.38/620.25
  6. Step 6: Final answer
    x = 281.25

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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.