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Finding the Fourth Proportional to 503.91, 754.74 and 311.13

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Solution

The fourth proportional to 503.91, 754.74 and 311.13 is: 466.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.91 : 754.74 = 311.13 : x
  2. Step 2: Convert to fraction form
    503.91/754.74 = 311.13/x
  3. Step 3: Cross multiply
    503.91x = 754.74 × 311.13
  4. Step 4: Simplify right side
    503.91x = 234,822.26
  5. Step 5: Solve for x
    x = 234,822.26/503.91
  6. Step 6: Final answer
    x = 466.00

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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.