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Finding the Fourth Proportional to 370.39, 555.39 and 187.60

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Solution

The fourth proportional to 370.39, 555.39 and 187.60 is: 281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.39 : 555.39 = 187.60 : x
  2. Step 2: Convert to fraction form
    370.39/555.39 = 187.60/x
  3. Step 3: Cross multiply
    370.39x = 555.39 × 187.60
  4. Step 4: Simplify right side
    370.39x = 104,191.16
  5. Step 5: Solve for x
    x = 104,191.16/370.39
  6. Step 6: Final answer
    x = 281.30

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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.