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Finding the Fourth Proportional to 316.07, 474.33 and 153.86

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Solution

The fourth proportional to 316.07, 474.33 and 153.86 is: 230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.07 : 474.33 = 153.86 : x
  2. Step 2: Convert to fraction form
    316.07/474.33 = 153.86/x
  3. Step 3: Cross multiply
    316.07x = 474.33 × 153.86
  4. Step 4: Simplify right side
    316.07x = 72,980.41
  5. Step 5: Solve for x
    x = 72,980.41/316.07
  6. Step 6: Final answer
    x = 230.90

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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.