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Finding the Fourth Proportional to 514.41, 709.61 and 315.35

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Solution

The fourth proportional to 514.41, 709.61 and 315.35 is: 435.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.41 : 709.61 = 315.35 : x
  2. Step 2: Convert to fraction form
    514.41/709.61 = 315.35/x
  3. Step 3: Cross multiply
    514.41x = 709.61 × 315.35
  4. Step 4: Simplify right side
    514.41x = 223,770.39
  5. Step 5: Solve for x
    x = 223,770.39/514.41
  6. Step 6: Final answer
    x = 435.00

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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.