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Finding the Fourth Proportional to 351.56, 524.87 and 290.81

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Solution

The fourth proportional to 351.56, 524.87 and 290.81 is: 434.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.56 : 524.87 = 290.81 : x
  2. Step 2: Convert to fraction form
    351.56/524.87 = 290.81/x
  3. Step 3: Cross multiply
    351.56x = 524.87 × 290.81
  4. Step 4: Simplify right side
    351.56x = 152,633.37
  5. Step 5: Solve for x
    x = 152,633.37/351.56
  6. Step 6: Final answer
    x = 434.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.