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Finding the Fourth Proportional to 559.68, 839.88 and 316.38

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Solution

The fourth proportional to 559.68, 839.88 and 316.38 is: 474.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.68 : 839.88 = 316.38 : x
  2. Step 2: Convert to fraction form
    559.68/839.88 = 316.38/x
  3. Step 3: Cross multiply
    559.68x = 839.88 × 316.38
  4. Step 4: Simplify right side
    559.68x = 265,721.23
  5. Step 5: Solve for x
    x = 265,721.23/559.68
  6. Step 6: Final answer
    x = 474.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.