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Finding the Fourth Proportional to 1,233.72, 1,848.96 and 907.56

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Solution

The fourth proportional to 1,233.72, 1,848.96 and 907.56 is: 1,360.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,233.72 : 1,848.96 = 907.56 : x
  2. Step 2: Convert to fraction form
    1,233.72/1,848.96 = 907.56/x
  3. Step 3: Cross multiply
    1,233.72x = 1,848.96 × 907.56
  4. Step 4: Simplify right side
    1,233.72x = 1,678,042.14
  5. Step 5: Solve for x
    x = 1,678,042.14/1,233.72
  6. Step 6: Final answer
    x = 1,360.15

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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.