Home / 1,270.15-1,904.71-392.44

Finding the Fourth Proportional to 1,270.15, 1,904.71 and 392.44

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Solution

The fourth proportional to 1,270.15, 1,904.71 and 392.44 is: 588.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.15 : 1,904.71 = 392.44 : x
  2. Step 2: Convert to fraction form
    1,270.15/1,904.71 = 392.44/x
  3. Step 3: Cross multiply
    1,270.15x = 1,904.71 × 392.44
  4. Step 4: Simplify right side
    1,270.15x = 747,484.39
  5. Step 5: Solve for x
    x = 747,484.39/1,270.15
  6. Step 6: Final answer
    x = 588.50

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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.