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Finding the Fourth Proportional to 699.82, 1,048.37 and 374.74

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Solution

The fourth proportional to 699.82, 1,048.37 and 374.74 is: 561.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.82 : 1,048.37 = 374.74 : x
  2. Step 2: Convert to fraction form
    699.82/1,048.37 = 374.74/x
  3. Step 3: Cross multiply
    699.82x = 1,048.37 × 374.74
  4. Step 4: Simplify right side
    699.82x = 392,866.17
  5. Step 5: Solve for x
    x = 392,866.17/699.82
  6. Step 6: Final answer
    x = 561.38

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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.