Home / 1,270.08-1,904.61-479.28

Finding the Fourth Proportional to 1,270.08, 1,904.61 and 479.28

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Solution

The fourth proportional to 1,270.08, 1,904.61 and 479.28 is: 718.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.08 : 1,904.61 = 479.28 : x
  2. Step 2: Convert to fraction form
    1,270.08/1,904.61 = 479.28/x
  3. Step 3: Cross multiply
    1,270.08x = 1,904.61 × 479.28
  4. Step 4: Simplify right side
    1,270.08x = 912,841.48
  5. Step 5: Solve for x
    x = 912,841.48/1,270.08
  6. Step 6: Final answer
    x = 718.73

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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.