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Finding the Fourth Proportional to 351.42, 526.96 and 253.51

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Solution

The fourth proportional to 351.42, 526.96 and 253.51 is: 380.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.42 : 526.96 = 253.51 : x
  2. Step 2: Convert to fraction form
    351.42/526.96 = 253.51/x
  3. Step 3: Cross multiply
    351.42x = 526.96 × 253.51
  4. Step 4: Simplify right side
    351.42x = 133,589.63
  5. Step 5: Solve for x
    x = 133,589.63/351.42
  6. Step 6: Final answer
    x = 380.14

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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.