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Finding the Fourth Proportional to 837.88, 1,156.54 and 488.86

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Solution

The fourth proportional to 837.88, 1,156.54 and 488.86 is: 674.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.88 : 1,156.54 = 488.86 : x
  2. Step 2: Convert to fraction form
    837.88/1,156.54 = 488.86/x
  3. Step 3: Cross multiply
    837.88x = 1,156.54 × 488.86
  4. Step 4: Simplify right side
    837.88x = 565,386.14
  5. Step 5: Solve for x
    x = 565,386.14/837.88
  6. Step 6: Final answer
    x = 674.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.