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Finding the Fourth Proportional to 702.66, 1,051.23 and 620.58

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Solution

The fourth proportional to 702.66, 1,051.23 and 620.58 is: 928.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.66 : 1,051.23 = 620.58 : x
  2. Step 2: Convert to fraction form
    702.66/1,051.23 = 620.58/x
  3. Step 3: Cross multiply
    702.66x = 1,051.23 × 620.58
  4. Step 4: Simplify right side
    702.66x = 652,372.31
  5. Step 5: Solve for x
    x = 652,372.31/702.66
  6. Step 6: Final answer
    x = 928.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.