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Finding the Fourth Proportional to 1,567.22, 2,163 and 904.28

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Solution

The fourth proportional to 1,567.22, 2,163 and 904.28 is: 1,248.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,567.22 : 2,163 = 904.28 : x
  2. Step 2: Convert to fraction form
    1,567.22/2,163 = 904.28/x
  3. Step 3: Cross multiply
    1,567.22x = 2,163 × 904.28
  4. Step 4: Simplify right side
    1,567.22x = 1,955,957.64
  5. Step 5: Solve for x
    x = 1,955,957.64/1,567.22
  6. Step 6: Final answer
    x = 1,248.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.