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Finding the Fourth Proportional to 702.21, 1,048.17 and 670.62

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Solution

The fourth proportional to 702.21, 1,048.17 and 670.62 is: 1,001.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.21 : 1,048.17 = 670.62 : x
  2. Step 2: Convert to fraction form
    702.21/1,048.17 = 670.62/x
  3. Step 3: Cross multiply
    702.21x = 1,048.17 × 670.62
  4. Step 4: Simplify right side
    702.21x = 702,923.77
  5. Step 5: Solve for x
    x = 702,923.77/702.21
  6. Step 6: Final answer
    x = 1,001.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.