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Finding the Fourth Proportional to 837.77, 1,156.13 and 488.45

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Solution

The fourth proportional to 837.77, 1,156.13 and 488.45 is: 674.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.77 : 1,156.13 = 488.45 : x
  2. Step 2: Convert to fraction form
    837.77/1,156.13 = 488.45/x
  3. Step 3: Cross multiply
    837.77x = 1,156.13 × 488.45
  4. Step 4: Simplify right side
    837.77x = 564,703.48
  5. Step 5: Solve for x
    x = 564,703.48/837.77
  6. Step 6: Final answer
    x = 674.06

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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.