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Finding the Fourth Proportional to 315.58, 436.17 and 237.82

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Solution

The fourth proportional to 315.58, 436.17 and 237.82 is: 328.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.58 : 436.17 = 237.82 : x
  2. Step 2: Convert to fraction form
    315.58/436.17 = 237.82/x
  3. Step 3: Cross multiply
    315.58x = 436.17 × 237.82
  4. Step 4: Simplify right side
    315.58x = 103,729.95
  5. Step 5: Solve for x
    x = 103,729.95/315.58
  6. Step 6: Final answer
    x = 328.70

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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.