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Finding the Fourth Proportional to 316.04, 473.69 and 312.62

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Solution

The fourth proportional to 316.04, 473.69 and 312.62 is: 468.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.04 : 473.69 = 312.62 : x
  2. Step 2: Convert to fraction form
    316.04/473.69 = 312.62/x
  3. Step 3: Cross multiply
    316.04x = 473.69 × 312.62
  4. Step 4: Simplify right side
    316.04x = 148,083.38
  5. Step 5: Solve for x
    x = 148,083.38/316.04
  6. Step 6: Final answer
    x = 468.57

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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.