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Finding the Fourth Proportional to 1,268.24, 1,749 and 973.52

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Solution

The fourth proportional to 1,268.24, 1,749 and 973.52 is: 1,342.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.24 : 1,749 = 973.52 : x
  2. Step 2: Convert to fraction form
    1,268.24/1,749 = 973.52/x
  3. Step 3: Cross multiply
    1,268.24x = 1,749 × 973.52
  4. Step 4: Simplify right side
    1,268.24x = 1,702,686.48
  5. Step 5: Solve for x
    x = 1,702,686.48/1,268.24
  6. Step 6: Final answer
    x = 1,342.56

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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.