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Finding the Fourth Proportional to 524.42, 786.38 and 351.28

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Solution

The fourth proportional to 524.42, 786.38 and 351.28 is: 526.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.42 : 786.38 = 351.28 : x
  2. Step 2: Convert to fraction form
    524.42/786.38 = 351.28/x
  3. Step 3: Cross multiply
    524.42x = 786.38 × 351.28
  4. Step 4: Simplify right side
    524.42x = 276,238.79
  5. Step 5: Solve for x
    x = 276,238.79/524.42
  6. Step 6: Final answer
    x = 526.75

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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.