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Finding the Fourth Proportional to 526.91, 727.38 and 330.55

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Solution

The fourth proportional to 526.91, 727.38 and 330.55 is: 456.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.91 : 727.38 = 330.55 : x
  2. Step 2: Convert to fraction form
    526.91/727.38 = 330.55/x
  3. Step 3: Cross multiply
    526.91x = 727.38 × 330.55
  4. Step 4: Simplify right side
    526.91x = 240,433.64
  5. Step 5: Solve for x
    x = 240,433.64/526.91
  6. Step 6: Final answer
    x = 456.31

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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.