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Finding the Fourth Proportional to 483.16, 724.08 and 239.86

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Solution

The fourth proportional to 483.16, 724.08 and 239.86 is: 359.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.16 : 724.08 = 239.86 : x
  2. Step 2: Convert to fraction form
    483.16/724.08 = 239.86/x
  3. Step 3: Cross multiply
    483.16x = 724.08 × 239.86
  4. Step 4: Simplify right side
    483.16x = 173,674.21
  5. Step 5: Solve for x
    x = 173,674.21/483.16
  6. Step 6: Final answer
    x = 359.45

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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.