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Finding the Fourth Proportional to 369.38, 554.13 and 153.11

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Solution

The fourth proportional to 369.38, 554.13 and 153.11 is: 229.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.38 : 554.13 = 153.11 : x
  2. Step 2: Convert to fraction form
    369.38/554.13 = 153.11/x
  3. Step 3: Cross multiply
    369.38x = 554.13 × 153.11
  4. Step 4: Simplify right side
    369.38x = 84,842.84
  5. Step 5: Solve for x
    x = 84,842.84/369.38
  6. Step 6: Final answer
    x = 229.69

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Double scale
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Similar ratio
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1.5x scale

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.