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Finding the Fourth Proportional to 846.45, 1,167.78 and 514.74

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Solution

The fourth proportional to 846.45, 1,167.78 and 514.74 is: 710.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.45 : 1,167.78 = 514.74 : x
  2. Step 2: Convert to fraction form
    846.45/1,167.78 = 514.74/x
  3. Step 3: Cross multiply
    846.45x = 1,167.78 × 514.74
  4. Step 4: Simplify right side
    846.45x = 601,103.08
  5. Step 5: Solve for x
    x = 601,103.08/846.45
  6. Step 6: Final answer
    x = 710.15

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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.