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Finding the Fourth Proportional to 1,771.25, 2,655.86 and 538.29

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Solution

The fourth proportional to 1,771.25, 2,655.86 and 538.29 is: 807.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.25 : 2,655.86 = 538.29 : x
  2. Step 2: Convert to fraction form
    1,771.25/2,655.86 = 538.29/x
  3. Step 3: Cross multiply
    1,771.25x = 2,655.86 × 538.29
  4. Step 4: Simplify right side
    1,771.25x = 1,429,620.19
  5. Step 5: Solve for x
    x = 1,429,620.19/1,771.25
  6. Step 6: Final answer
    x = 807.13

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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.