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Finding the Fourth Proportional to 503.58, 753.82 and 320.70

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Solution

The fourth proportional to 503.58, 753.82 and 320.70 is: 480.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.58 : 753.82 = 320.70 : x
  2. Step 2: Convert to fraction form
    503.58/753.82 = 320.70/x
  3. Step 3: Cross multiply
    503.58x = 753.82 × 320.70
  4. Step 4: Simplify right side
    503.58x = 241,749.27
  5. Step 5: Solve for x
    x = 241,749.27/503.58
  6. Step 6: Final answer
    x = 480.06

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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.