Home / 1,127.30-1,690.22-469.63

Finding the Fourth Proportional to 1,127.30, 1,690.22 and 469.63

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Solution

The fourth proportional to 1,127.30, 1,690.22 and 469.63 is: 704.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.30 : 1,690.22 = 469.63 : x
  2. Step 2: Convert to fraction form
    1,127.30/1,690.22 = 469.63/x
  3. Step 3: Cross multiply
    1,127.30x = 1,690.22 × 469.63
  4. Step 4: Simplify right side
    1,127.30x = 793,767.22
  5. Step 5: Solve for x
    x = 793,767.22/1,127.30
  6. Step 6: Final answer
    x = 704.13

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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.