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Finding the Fourth Proportional to 714.55, 1,071.93 and 227.48

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Solution

The fourth proportional to 714.55, 1,071.93 and 227.48 is: 341.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.55 : 1,071.93 = 227.48 : x
  2. Step 2: Convert to fraction form
    714.55/1,071.93 = 227.48/x
  3. Step 3: Cross multiply
    714.55x = 1,071.93 × 227.48
  4. Step 4: Simplify right side
    714.55x = 243,842.64
  5. Step 5: Solve for x
    x = 243,842.64/714.55
  6. Step 6: Final answer
    x = 341.25

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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.