Home / 1,218.64-1,827.69-488.02

Finding the Fourth Proportional to 1,218.64, 1,827.69 and 488.02

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Solution

The fourth proportional to 1,218.64, 1,827.69 and 488.02 is: 731.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.64 : 1,827.69 = 488.02 : x
  2. Step 2: Convert to fraction form
    1,218.64/1,827.69 = 488.02/x
  3. Step 3: Cross multiply
    1,218.64x = 1,827.69 × 488.02
  4. Step 4: Simplify right side
    1,218.64x = 891,949.27
  5. Step 5: Solve for x
    x = 891,949.27/1,218.64
  6. Step 6: Final answer
    x = 731.92

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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.