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Finding the Fourth Proportional to 485.02, 726.99 and 356.50

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Solution

The fourth proportional to 485.02, 726.99 and 356.50 is: 534.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.02 : 726.99 = 356.50 : x
  2. Step 2: Convert to fraction form
    485.02/726.99 = 356.50/x
  3. Step 3: Cross multiply
    485.02x = 726.99 × 356.50
  4. Step 4: Simplify right side
    485.02x = 259,171.94
  5. Step 5: Solve for x
    x = 259,171.94/485.02
  6. Step 6: Final answer
    x = 534.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.