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Finding the Fourth Proportional to 351.74, 526.30 and 340.81

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Solution

The fourth proportional to 351.74, 526.30 and 340.81 is: 509.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.74 : 526.30 = 340.81 : x
  2. Step 2: Convert to fraction form
    351.74/526.30 = 340.81/x
  3. Step 3: Cross multiply
    351.74x = 526.30 × 340.81
  4. Step 4: Simplify right side
    351.74x = 179,366.14
  5. Step 5: Solve for x
    x = 179,366.14/351.74
  6. Step 6: Final answer
    x = 509.94

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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.