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Finding the Fourth Proportional to 882.72, 1,326.14 and 624.38

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Solution

The fourth proportional to 882.72, 1,326.14 and 624.38 is: 938.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.72 : 1,326.14 = 624.38 : x
  2. Step 2: Convert to fraction form
    882.72/1,326.14 = 624.38/x
  3. Step 3: Cross multiply
    882.72x = 1,326.14 × 624.38
  4. Step 4: Simplify right side
    882.72x = 828,015.29
  5. Step 5: Solve for x
    x = 828,015.29/882.72
  6. Step 6: Final answer
    x = 938.03

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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.