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Finding the Fourth Proportional to 1,801.68, 2,702.42 and 631.32

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Solution

The fourth proportional to 1,801.68, 2,702.42 and 631.32 is: 946.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,801.68 : 2,702.42 = 631.32 : x
  2. Step 2: Convert to fraction form
    1,801.68/2,702.42 = 631.32/x
  3. Step 3: Cross multiply
    1,801.68x = 2,702.42 × 631.32
  4. Step 4: Simplify right side
    1,801.68x = 1,706,091.79
  5. Step 5: Solve for x
    x = 1,706,091.79/1,801.68
  6. Step 6: Final answer
    x = 946.94

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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.