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Finding the Fourth Proportional to 772.51, 1,159.17 and 591.07

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Solution

The fourth proportional to 772.51, 1,159.17 and 591.07 is: 886.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    772.51 : 1,159.17 = 591.07 : x
  2. Step 2: Convert to fraction form
    772.51/1,159.17 = 591.07/x
  3. Step 3: Cross multiply
    772.51x = 1,159.17 × 591.07
  4. Step 4: Simplify right side
    772.51x = 685,150.61
  5. Step 5: Solve for x
    x = 685,150.61/772.51
  6. Step 6: Final answer
    x = 886.91

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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.