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Finding the Fourth Proportional to 552.84, 762.84 and 316.80

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Solution

The fourth proportional to 552.84, 762.84 and 316.80 is: 437.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.84 : 762.84 = 316.80 : x
  2. Step 2: Convert to fraction form
    552.84/762.84 = 316.80/x
  3. Step 3: Cross multiply
    552.84x = 762.84 × 316.80
  4. Step 4: Simplify right side
    552.84x = 241,667.71
  5. Step 5: Solve for x
    x = 241,667.71/552.84
  6. Step 6: Final answer
    x = 437.14

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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.