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Finding the Fourth Proportional to 977.11, 1,348.27 and 604.06

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Solution

The fourth proportional to 977.11, 1,348.27 and 604.06 is: 833.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    977.11 : 1,348.27 = 604.06 : x
  2. Step 2: Convert to fraction form
    977.11/1,348.27 = 604.06/x
  3. Step 3: Cross multiply
    977.11x = 1,348.27 × 604.06
  4. Step 4: Simplify right side
    977.11x = 814,435.98
  5. Step 5: Solve for x
    x = 814,435.98/977.11
  6. Step 6: Final answer
    x = 833.52

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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.