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Finding the Fourth Proportional to 315.64, 473.77 and 238.34

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Solution

The fourth proportional to 315.64, 473.77 and 238.34 is: 357.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.64 : 473.77 = 238.34 : x
  2. Step 2: Convert to fraction form
    315.64/473.77 = 238.34/x
  3. Step 3: Cross multiply
    315.64x = 473.77 × 238.34
  4. Step 4: Simplify right side
    315.64x = 112,915.97
  5. Step 5: Solve for x
    x = 112,915.97/315.64
  6. Step 6: Final answer
    x = 357.74

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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.