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Finding the Fourth Proportional to 526.10, 725.81 and 329.72

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Solution

The fourth proportional to 526.10, 725.81 and 329.72 is: 454.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.10 : 725.81 = 329.72 : x
  2. Step 2: Convert to fraction form
    526.10/725.81 = 329.72/x
  3. Step 3: Cross multiply
    526.10x = 725.81 × 329.72
  4. Step 4: Simplify right side
    526.10x = 239,314.73
  5. Step 5: Solve for x
    x = 239,314.73/526.10
  6. Step 6: Final answer
    x = 454.89

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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.