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Finding the Fourth Proportional to 290, 434.88 and 152.96

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Solution

The fourth proportional to 290, 434.88 and 152.96 is: 229.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    290 : 434.88 = 152.96 : x
  2. Step 2: Convert to fraction form
    290/434.88 = 152.96/x
  3. Step 3: Cross multiply
    290x = 434.88 × 152.96
  4. Step 4: Simplify right side
    290x = 66,519.24
  5. Step 5: Solve for x
    x = 66,519.24/290
  6. Step 6: Final answer
    x = 229.38

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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.