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Finding the Fourth Proportional to 1,016.94, 1,404.46 and 702.66

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Solution

The fourth proportional to 1,016.94, 1,404.46 and 702.66 is: 970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,016.94 : 1,404.46 = 702.66 : x
  2. Step 2: Convert to fraction form
    1,016.94/1,404.46 = 702.66/x
  3. Step 3: Cross multiply
    1,016.94x = 1,404.46 × 702.66
  4. Step 4: Simplify right side
    1,016.94x = 986,857.86
  5. Step 5: Solve for x
    x = 986,857.86/1,016.94
  6. Step 6: Final answer
    x = 970.42

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1.5x scale

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.