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Finding the Fourth Proportional to 946.81, 1,306.93 and 548.65

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Solution

The fourth proportional to 946.81, 1,306.93 and 548.65 is: 757.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.81 : 1,306.93 = 548.65 : x
  2. Step 2: Convert to fraction form
    946.81/1,306.93 = 548.65/x
  3. Step 3: Cross multiply
    946.81x = 1,306.93 × 548.65
  4. Step 4: Simplify right side
    946.81x = 717,040.61
  5. Step 5: Solve for x
    x = 717,040.61/946.81
  6. Step 6: Final answer
    x = 757.33

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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.