Home / 1,116.18-1,673.24-385.58

Finding the Fourth Proportional to 1,116.18, 1,673.24 and 385.58

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Solution

The fourth proportional to 1,116.18, 1,673.24 and 385.58 is: 578.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.18 : 1,673.24 = 385.58 : x
  2. Step 2: Convert to fraction form
    1,116.18/1,673.24 = 385.58/x
  3. Step 3: Cross multiply
    1,116.18x = 1,673.24 × 385.58
  4. Step 4: Simplify right side
    1,116.18x = 645,167.88
  5. Step 5: Solve for x
    x = 645,167.88/1,116.18
  6. Step 6: Final answer
    x = 578.01

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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.