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Finding the Fourth Proportional to 702.64, 969.69 and 440.59

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Solution

The fourth proportional to 702.64, 969.69 and 440.59 is: 608.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.64 : 969.69 = 440.59 : x
  2. Step 2: Convert to fraction form
    702.64/969.69 = 440.59/x
  3. Step 3: Cross multiply
    702.64x = 969.69 × 440.59
  4. Step 4: Simplify right side
    702.64x = 427,235.72
  5. Step 5: Solve for x
    x = 427,235.72/702.64
  6. Step 6: Final answer
    x = 608.04

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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.