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Finding the Fourth Proportional to 344.87, 514.80 and 320.76

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Solution

The fourth proportional to 344.87, 514.80 and 320.76 is: 478.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.87 : 514.80 = 320.76 : x
  2. Step 2: Convert to fraction form
    344.87/514.80 = 320.76/x
  3. Step 3: Cross multiply
    344.87x = 514.80 × 320.76
  4. Step 4: Simplify right side
    344.87x = 165,127.25
  5. Step 5: Solve for x
    x = 165,127.25/344.87
  6. Step 6: Final answer
    x = 478.82

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.