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Finding the Fourth Proportional to 362.65, 543.98 and 260.80

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Solution

The fourth proportional to 362.65, 543.98 and 260.80 is: 391.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.65 : 543.98 = 260.80 : x
  2. Step 2: Convert to fraction form
    362.65/543.98 = 260.80/x
  3. Step 3: Cross multiply
    362.65x = 543.98 × 260.80
  4. Step 4: Simplify right side
    362.65x = 141,869.98
  5. Step 5: Solve for x
    x = 141,869.98/362.65
  6. Step 6: Final answer
    x = 391.20

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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.