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Finding the Fourth Proportional to 520.79, 718.38 and 334.17

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Solution

The fourth proportional to 520.79, 718.38 and 334.17 is: 460.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.79 : 718.38 = 334.17 : x
  2. Step 2: Convert to fraction form
    520.79/718.38 = 334.17/x
  3. Step 3: Cross multiply
    520.79x = 718.38 × 334.17
  4. Step 4: Simplify right side
    520.79x = 240,061.04
  5. Step 5: Solve for x
    x = 240,061.04/520.79
  6. Step 6: Final answer
    x = 460.96

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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.