Home / 1,175.25-1,621.85-651.29

Finding the Fourth Proportional to 1,175.25, 1,621.85 and 651.29

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Solution

The fourth proportional to 1,175.25, 1,621.85 and 651.29 is: 898.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.25 : 1,621.85 = 651.29 : x
  2. Step 2: Convert to fraction form
    1,175.25/1,621.85 = 651.29/x
  3. Step 3: Cross multiply
    1,175.25x = 1,621.85 × 651.29
  4. Step 4: Simplify right side
    1,175.25x = 1,056,283.32
  5. Step 5: Solve for x
    x = 1,056,283.32/1,175.25
  6. Step 6: Final answer
    x = 898.77

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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.