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Finding the Fourth Proportional to 1,852.64, 2,779.56 and 554.12

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Solution

The fourth proportional to 1,852.64, 2,779.56 and 554.12 is: 831.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,852.64 : 2,779.56 = 554.12 : x
  2. Step 2: Convert to fraction form
    1,852.64/2,779.56 = 554.12/x
  3. Step 3: Cross multiply
    1,852.64x = 2,779.56 × 554.12
  4. Step 4: Simplify right side
    1,852.64x = 1,540,209.79
  5. Step 5: Solve for x
    x = 1,540,209.79/1,852.64
  6. Step 6: Final answer
    x = 831.36

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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.