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Finding the Fourth Proportional to 401.32, 603.06 and 292.78

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Solution

The fourth proportional to 401.32, 603.06 and 292.78 is: 439.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.32 : 603.06 = 292.78 : x
  2. Step 2: Convert to fraction form
    401.32/603.06 = 292.78/x
  3. Step 3: Cross multiply
    401.32x = 603.06 × 292.78
  4. Step 4: Simplify right side
    401.32x = 176,563.91
  5. Step 5: Solve for x
    x = 176,563.91/401.32
  6. Step 6: Final answer
    x = 439.96

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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.