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Finding the Fourth Proportional to 698.83, 964.51 and 404.19

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Solution

The fourth proportional to 698.83, 964.51 and 404.19 is: 557.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.83 : 964.51 = 404.19 : x
  2. Step 2: Convert to fraction form
    698.83/964.51 = 404.19/x
  3. Step 3: Cross multiply
    698.83x = 964.51 × 404.19
  4. Step 4: Simplify right side
    698.83x = 389,844.29
  5. Step 5: Solve for x
    x = 389,844.29/698.83
  6. Step 6: Final answer
    x = 557.85

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Double scale
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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.