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Finding the Fourth Proportional to 630.20, 943.86 and 340.76

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Solution

The fourth proportional to 630.20, 943.86 and 340.76 is: 510.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.20 : 943.86 = 340.76 : x
  2. Step 2: Convert to fraction form
    630.20/943.86 = 340.76/x
  3. Step 3: Cross multiply
    630.20x = 943.86 × 340.76
  4. Step 4: Simplify right side
    630.20x = 321,629.73
  5. Step 5: Solve for x
    x = 321,629.73/630.20
  6. Step 6: Final answer
    x = 510.36

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1.5x scale

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.