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Finding the Fourth Proportional to 756.84, 1,135.08 and 468.12

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Solution

The fourth proportional to 756.84, 1,135.08 and 468.12 is: 702.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    756.84 : 1,135.08 = 468.12 : x
  2. Step 2: Convert to fraction form
    756.84/1,135.08 = 468.12/x
  3. Step 3: Cross multiply
    756.84x = 1,135.08 × 468.12
  4. Step 4: Simplify right side
    756.84x = 531,353.65
  5. Step 5: Solve for x
    x = 531,353.65/756.84
  6. Step 6: Final answer
    x = 702.07

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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.