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Finding the Fourth Proportional to 368.71, 553.32 and 238.65

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Solution

The fourth proportional to 368.71, 553.32 and 238.65 is: 358.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.71 : 553.32 = 238.65 : x
  2. Step 2: Convert to fraction form
    368.71/553.32 = 238.65/x
  3. Step 3: Cross multiply
    368.71x = 553.32 × 238.65
  4. Step 4: Simplify right side
    368.71x = 132,050.60
  5. Step 5: Solve for x
    x = 132,050.60/368.71
  6. Step 6: Final answer
    x = 358.14

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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.