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Finding the Fourth Proportional to 1,445.40, 2,167.76 and 567.92

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Solution

The fourth proportional to 1,445.40, 2,167.76 and 567.92 is: 851.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.40 : 2,167.76 = 567.92 : x
  2. Step 2: Convert to fraction form
    1,445.40/2,167.76 = 567.92/x
  3. Step 3: Cross multiply
    1,445.40x = 2,167.76 × 567.92
  4. Step 4: Simplify right side
    1,445.40x = 1,231,114.26
  5. Step 5: Solve for x
    x = 1,231,114.26/1,445.40
  6. Step 6: Final answer
    x = 851.75

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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.