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Finding the Fourth Proportional to 339.04, 468.10 and 315.79

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Solution

The fourth proportional to 339.04, 468.10 and 315.79 is: 435.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.04 : 468.10 = 315.79 : x
  2. Step 2: Convert to fraction form
    339.04/468.10 = 315.79/x
  3. Step 3: Cross multiply
    339.04x = 468.10 × 315.79
  4. Step 4: Simplify right side
    339.04x = 147,818.96
  5. Step 5: Solve for x
    x = 147,818.96/339.04
  6. Step 6: Final answer
    x = 435.99

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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.