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Finding the Fourth Proportional to 714.61, 1,071.90 and 227.65

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Solution

The fourth proportional to 714.61, 1,071.90 and 227.65 is: 341.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.61 : 1,071.90 = 227.65 : x
  2. Step 2: Convert to fraction form
    714.61/1,071.90 = 227.65/x
  3. Step 3: Cross multiply
    714.61x = 1,071.90 × 227.65
  4. Step 4: Simplify right side
    714.61x = 244,019.37
  5. Step 5: Solve for x
    x = 244,019.37/714.61
  6. Step 6: Final answer
    x = 341.47

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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.