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Finding the Fourth Proportional to 525.70, 725.52 and 304.64

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Solution

The fourth proportional to 525.70, 725.52 and 304.64 is: 420.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.70 : 725.52 = 304.64 : x
  2. Step 2: Convert to fraction form
    525.70/725.52 = 304.64/x
  3. Step 3: Cross multiply
    525.70x = 725.52 × 304.64
  4. Step 4: Simplify right side
    525.70x = 221,022.41
  5. Step 5: Solve for x
    x = 221,022.41/525.70
  6. Step 6: Final answer
    x = 420.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.