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Finding the Fourth Proportional to 924.25, 1,276.41 and 690.97

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Solution

The fourth proportional to 924.25, 1,276.41 and 690.97 is: 954.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.25 : 1,276.41 = 690.97 : x
  2. Step 2: Convert to fraction form
    924.25/1,276.41 = 690.97/x
  3. Step 3: Cross multiply
    924.25x = 1,276.41 × 690.97
  4. Step 4: Simplify right side
    924.25x = 881,961.02
  5. Step 5: Solve for x
    x = 881,961.02/924.25
  6. Step 6: Final answer
    x = 954.25

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1.5x scale

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.