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Finding the Fourth Proportional to 846.57, 1,168.32 and 492.50

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Solution

The fourth proportional to 846.57, 1,168.32 and 492.50 is: 679.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.57 : 1,168.32 = 492.50 : x
  2. Step 2: Convert to fraction form
    846.57/1,168.32 = 492.50/x
  3. Step 3: Cross multiply
    846.57x = 1,168.32 × 492.50
  4. Step 4: Simplify right side
    846.57x = 575,391.76
  5. Step 5: Solve for x
    x = 575,391.76/846.57
  6. Step 6: Final answer
    x = 679.67

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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.