Home / 1,207.59-1,811.28-477.18

Finding the Fourth Proportional to 1,207.59, 1,811.28 and 477.18

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Solution

The fourth proportional to 1,207.59, 1,811.28 and 477.18 is: 715.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.59 : 1,811.28 = 477.18 : x
  2. Step 2: Convert to fraction form
    1,207.59/1,811.28 = 477.18/x
  3. Step 3: Cross multiply
    1,207.59x = 1,811.28 × 477.18
  4. Step 4: Simplify right side
    1,207.59x = 864,306.59
  5. Step 5: Solve for x
    x = 864,306.59/1,207.59
  6. Step 6: Final answer
    x = 715.73

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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.