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Finding the Fourth Proportional to 315.31, 473.03 and 95.95

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Solution

The fourth proportional to 315.31, 473.03 and 95.95 is: 143.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.31 : 473.03 = 95.95 : x
  2. Step 2: Convert to fraction form
    315.31/473.03 = 95.95/x
  3. Step 3: Cross multiply
    315.31x = 473.03 × 95.95
  4. Step 4: Simplify right side
    315.31x = 45,386.75
  5. Step 5: Solve for x
    x = 45,386.75/315.31
  6. Step 6: Final answer
    x = 143.94

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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.