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Finding the Fourth Proportional to 333.76, 459.84 and 275.20

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Solution

The fourth proportional to 333.76, 459.84 and 275.20 is: 379.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.76 : 459.84 = 275.20 : x
  2. Step 2: Convert to fraction form
    333.76/459.84 = 275.20/x
  3. Step 3: Cross multiply
    333.76x = 459.84 × 275.20
  4. Step 4: Simplify right side
    333.76x = 126,547.97
  5. Step 5: Solve for x
    x = 126,547.97/333.76
  6. Step 6: Final answer
    x = 379.16

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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.