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Finding the Fourth Proportional to 798.40, 1,101.90 and 601.84

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Solution

The fourth proportional to 798.40, 1,101.90 and 601.84 is: 830.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.40 : 1,101.90 = 601.84 : x
  2. Step 2: Convert to fraction form
    798.40/1,101.90 = 601.84/x
  3. Step 3: Cross multiply
    798.40x = 1,101.90 × 601.84
  4. Step 4: Simplify right side
    798.40x = 663,167.50
  5. Step 5: Solve for x
    x = 663,167.50/798.40
  6. Step 6: Final answer
    x = 830.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.