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Finding the Fourth Proportional to 370.55, 553.58 and 239.48

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Solution

The fourth proportional to 370.55, 553.58 and 239.48 is: 357.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.55 : 553.58 = 239.48 : x
  2. Step 2: Convert to fraction form
    370.55/553.58 = 239.48/x
  3. Step 3: Cross multiply
    370.55x = 553.58 × 239.48
  4. Step 4: Simplify right side
    370.55x = 132,570.14
  5. Step 5: Solve for x
    x = 132,570.14/370.55
  6. Step 6: Final answer
    x = 357.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.