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Finding the Fourth Proportional to 837.42, 1,251.52 and 618.51

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Solution

The fourth proportional to 837.42, 1,251.52 and 618.51 is: 924.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.42 : 1,251.52 = 618.51 : x
  2. Step 2: Convert to fraction form
    837.42/1,251.52 = 618.51/x
  3. Step 3: Cross multiply
    837.42x = 1,251.52 × 618.51
  4. Step 4: Simplify right side
    837.42x = 774,076.09
  5. Step 5: Solve for x
    x = 774,076.09/837.42
  6. Step 6: Final answer
    x = 924.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.