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Finding the Fourth Proportional to 702.18, 969.00 and 387.44

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Solution

The fourth proportional to 702.18, 969.00 and 387.44 is: 534.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.18 : 969.00 = 387.44 : x
  2. Step 2: Convert to fraction form
    702.18/969.00 = 387.44/x
  3. Step 3: Cross multiply
    702.18x = 969.00 × 387.44
  4. Step 4: Simplify right side
    702.18x = 375,430.33
  5. Step 5: Solve for x
    x = 375,430.33/702.18
  6. Step 6: Final answer
    x = 534.67

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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.