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Finding the Fourth Proportional to 789.51, 1,088.31 and 527.07

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Solution

The fourth proportional to 789.51, 1,088.31 and 527.07 is: 726.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.51 : 1,088.31 = 527.07 : x
  2. Step 2: Convert to fraction form
    789.51/1,088.31 = 527.07/x
  3. Step 3: Cross multiply
    789.51x = 1,088.31 × 527.07
  4. Step 4: Simplify right side
    789.51x = 573,615.55
  5. Step 5: Solve for x
    x = 573,615.55/789.51
  6. Step 6: Final answer
    x = 726.55

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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.