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Finding the Fourth Proportional to 1,860.64, 2,790.88 and 474.03

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Solution

The fourth proportional to 1,860.64, 2,790.88 and 474.03 is: 711.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.64 : 2,790.88 = 474.03 : x
  2. Step 2: Convert to fraction form
    1,860.64/2,790.88 = 474.03/x
  3. Step 3: Cross multiply
    1,860.64x = 2,790.88 × 474.03
  4. Step 4: Simplify right side
    1,860.64x = 1,322,959.66
  5. Step 5: Solve for x
    x = 1,322,959.66/1,860.64
  6. Step 6: Final answer
    x = 711.02

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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.