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Finding the Fourth Proportional to 526.96, 727.28 and 330.56

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Solution

The fourth proportional to 526.96, 727.28 and 330.56 is: 456.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.96 : 727.28 = 330.56 : x
  2. Step 2: Convert to fraction form
    526.96/727.28 = 330.56/x
  3. Step 3: Cross multiply
    526.96x = 727.28 × 330.56
  4. Step 4: Simplify right side
    526.96x = 240,409.68
  5. Step 5: Solve for x
    x = 240,409.68/526.96
  6. Step 6: Final answer
    x = 456.22

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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.