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Finding the Fourth Proportional to 313.66, 469.73 and 169.02

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Solution

The fourth proportional to 313.66, 469.73 and 169.02 is: 253.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.66 : 469.73 = 169.02 : x
  2. Step 2: Convert to fraction form
    313.66/469.73 = 169.02/x
  3. Step 3: Cross multiply
    313.66x = 469.73 × 169.02
  4. Step 4: Simplify right side
    313.66x = 79,393.76
  5. Step 5: Solve for x
    x = 79,393.76/313.66
  6. Step 6: Final answer
    x = 253.12

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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.