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Finding the Fourth Proportional to 401.46, 603.12 and 348.66

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Solution

The fourth proportional to 401.46, 603.12 and 348.66 is: 523.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.46 : 603.12 = 348.66 : x
  2. Step 2: Convert to fraction form
    401.46/603.12 = 348.66/x
  3. Step 3: Cross multiply
    401.46x = 603.12 × 348.66
  4. Step 4: Simplify right side
    401.46x = 210,283.82
  5. Step 5: Solve for x
    x = 210,283.82/401.46
  6. Step 6: Final answer
    x = 523.80

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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.