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Finding the Fourth Proportional to 1,787.50, 2,681.48 and 633.25

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Solution

The fourth proportional to 1,787.50, 2,681.48 and 633.25 is: 949.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.50 : 2,681.48 = 633.25 : x
  2. Step 2: Convert to fraction form
    1,787.50/2,681.48 = 633.25/x
  3. Step 3: Cross multiply
    1,787.50x = 2,681.48 × 633.25
  4. Step 4: Simplify right side
    1,787.50x = 1,698,047.21
  5. Step 5: Solve for x
    x = 1,698,047.21/1,787.50
  6. Step 6: Final answer
    x = 949.96

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1.5x scale

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.