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Finding the Fourth Proportional to 699.30, 1,048.19 and 351.95

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Solution

The fourth proportional to 699.30, 1,048.19 and 351.95 is: 527.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.30 : 1,048.19 = 351.95 : x
  2. Step 2: Convert to fraction form
    699.30/1,048.19 = 351.95/x
  3. Step 3: Cross multiply
    699.30x = 1,048.19 × 351.95
  4. Step 4: Simplify right side
    699.30x = 368,903.47
  5. Step 5: Solve for x
    x = 368,903.47/699.30
  6. Step 6: Final answer
    x = 527.53

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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.