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Finding the Fourth Proportional to 1,764.48, 2,646.88 and 531.68

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Solution

The fourth proportional to 1,764.48, 2,646.88 and 531.68 is: 797.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,764.48 : 2,646.88 = 531.68 : x
  2. Step 2: Convert to fraction form
    1,764.48/2,646.88 = 531.68/x
  3. Step 3: Cross multiply
    1,764.48x = 2,646.88 × 531.68
  4. Step 4: Simplify right side
    1,764.48x = 1,407,293.16
  5. Step 5: Solve for x
    x = 1,407,293.16/1,764.48
  6. Step 6: Final answer
    x = 797.57

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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.