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Finding the Fourth Proportional to 761.58, 1,051.49 and 584.22

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Solution

The fourth proportional to 761.58, 1,051.49 and 584.22 is: 806.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.58 : 1,051.49 = 584.22 : x
  2. Step 2: Convert to fraction form
    761.58/1,051.49 = 584.22/x
  3. Step 3: Cross multiply
    761.58x = 1,051.49 × 584.22
  4. Step 4: Simplify right side
    761.58x = 614,301.49
  5. Step 5: Solve for x
    x = 614,301.49/761.58
  6. Step 6: Final answer
    x = 806.61

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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.