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Finding the Fourth Proportional to 483.16, 724.98 and 209.50

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Solution

The fourth proportional to 483.16, 724.98 and 209.50 is: 314.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.16 : 724.98 = 209.50 : x
  2. Step 2: Convert to fraction form
    483.16/724.98 = 209.50/x
  3. Step 3: Cross multiply
    483.16x = 724.98 × 209.50
  4. Step 4: Simplify right side
    483.16x = 151,883.31
  5. Step 5: Solve for x
    x = 151,883.31/483.16
  6. Step 6: Final answer
    x = 314.35

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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.