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Finding the Fourth Proportional to 757.89, 1,046.47 and 591.81

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Solution

The fourth proportional to 757.89, 1,046.47 and 591.81 is: 817.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.89 : 1,046.47 = 591.81 : x
  2. Step 2: Convert to fraction form
    757.89/1,046.47 = 591.81/x
  3. Step 3: Cross multiply
    757.89x = 1,046.47 × 591.81
  4. Step 4: Simplify right side
    757.89x = 619,306.18
  5. Step 5: Solve for x
    x = 619,306.18/757.89
  6. Step 6: Final answer
    x = 817.15

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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.