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Finding the Fourth Proportional to 529.66, 730.38 and 355.24

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Solution

The fourth proportional to 529.66, 730.38 and 355.24 is: 489.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.66 : 730.38 = 355.24 : x
  2. Step 2: Convert to fraction form
    529.66/730.38 = 355.24/x
  3. Step 3: Cross multiply
    529.66x = 730.38 × 355.24
  4. Step 4: Simplify right side
    529.66x = 259,460.19
  5. Step 5: Solve for x
    x = 259,460.19/529.66
  6. Step 6: Final answer
    x = 489.86

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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.