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Finding the Fourth Proportional to 356.24, 490.16 and 348.06

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Solution

The fourth proportional to 356.24, 490.16 and 348.06 is: 478.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.24 : 490.16 = 348.06 : x
  2. Step 2: Convert to fraction form
    356.24/490.16 = 348.06/x
  3. Step 3: Cross multiply
    356.24x = 490.16 × 348.06
  4. Step 4: Simplify right side
    356.24x = 170,605.09
  5. Step 5: Solve for x
    x = 170,605.09/356.24
  6. Step 6: Final answer
    x = 478.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.