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Finding the Fourth Proportional to 529.25, 730.57 and 354.70

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Solution

The fourth proportional to 529.25, 730.57 and 354.70 is: 489.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.25 : 730.57 = 354.70 : x
  2. Step 2: Convert to fraction form
    529.25/730.57 = 354.70/x
  3. Step 3: Cross multiply
    529.25x = 730.57 × 354.70
  4. Step 4: Simplify right side
    529.25x = 259,133.18
  5. Step 5: Solve for x
    x = 259,133.18/529.25
  6. Step 6: Final answer
    x = 489.62

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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.