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Finding the Fourth Proportional to 313.01, 469.25 and 120.50

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Solution

The fourth proportional to 313.01, 469.25 and 120.50 is: 180.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.01 : 469.25 = 120.50 : x
  2. Step 2: Convert to fraction form
    313.01/469.25 = 120.50/x
  3. Step 3: Cross multiply
    313.01x = 469.25 × 120.50
  4. Step 4: Simplify right side
    313.01x = 56,544.02
  5. Step 5: Solve for x
    x = 56,544.02/313.01
  6. Step 6: Final answer
    x = 180.65

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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.