Home / 1,127.30-1,690.52-433.60

Finding the Fourth Proportional to 1,127.30, 1,690.52 and 433.60

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Solution

The fourth proportional to 1,127.30, 1,690.52 and 433.60 is: 650.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.30 : 1,690.52 = 433.60 : x
  2. Step 2: Convert to fraction form
    1,127.30/1,690.52 = 433.60/x
  3. Step 3: Cross multiply
    1,127.30x = 1,690.52 × 433.60
  4. Step 4: Simplify right side
    1,127.30x = 733,009.47
  5. Step 5: Solve for x
    x = 733,009.47/1,127.30
  6. Step 6: Final answer
    x = 650.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.