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Finding the Fourth Proportional to 702.36, 969.68 and 492.46

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Solution

The fourth proportional to 702.36, 969.68 and 492.46 is: 679.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.36 : 969.68 = 492.46 : x
  2. Step 2: Convert to fraction form
    702.36/969.68 = 492.46/x
  3. Step 3: Cross multiply
    702.36x = 969.68 × 492.46
  4. Step 4: Simplify right side
    702.36x = 477,528.61
  5. Step 5: Solve for x
    x = 477,528.61/702.36
  6. Step 6: Final answer
    x = 679.89

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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.