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Finding the Fourth Proportional to 554.62, 831.36 and 207.71

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Solution

The fourth proportional to 554.62, 831.36 and 207.71 is: 311.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.62 : 831.36 = 207.71 : x
  2. Step 2: Convert to fraction form
    554.62/831.36 = 207.71/x
  3. Step 3: Cross multiply
    554.62x = 831.36 × 207.71
  4. Step 4: Simplify right side
    554.62x = 172,680.75
  5. Step 5: Solve for x
    x = 172,680.75/554.62
  6. Step 6: Final answer
    x = 311.35

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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.