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Finding the Fourth Proportional to 315.09, 437.06 and 304.02

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Solution

The fourth proportional to 315.09, 437.06 and 304.02 is: 421.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.09 : 437.06 = 304.02 : x
  2. Step 2: Convert to fraction form
    315.09/437.06 = 304.02/x
  3. Step 3: Cross multiply
    315.09x = 437.06 × 304.02
  4. Step 4: Simplify right side
    315.09x = 132,875.74
  5. Step 5: Solve for x
    x = 132,875.74/315.09
  6. Step 6: Final answer
    x = 421.71

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.