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Finding the Fourth Proportional to 924.70, 1,276.45 and 677.98

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Solution

The fourth proportional to 924.70, 1,276.45 and 677.98 is: 935.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.70 : 1,276.45 = 677.98 : x
  2. Step 2: Convert to fraction form
    924.70/1,276.45 = 677.98/x
  3. Step 3: Cross multiply
    924.70x = 1,276.45 × 677.98
  4. Step 4: Simplify right side
    924.70x = 865,407.57
  5. Step 5: Solve for x
    x = 865,407.57/924.70
  6. Step 6: Final answer
    x = 935.88

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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.