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Finding the Fourth Proportional to 702.03, 1,057.14 and 520.68

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Solution

The fourth proportional to 702.03, 1,057.14 and 520.68 is: 784.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.03 : 1,057.14 = 520.68 : x
  2. Step 2: Convert to fraction form
    702.03/1,057.14 = 520.68/x
  3. Step 3: Cross multiply
    702.03x = 1,057.14 × 520.68
  4. Step 4: Simplify right side
    702.03x = 550,431.66
  5. Step 5: Solve for x
    x = 550,431.66/702.03
  6. Step 6: Final answer
    x = 784.06

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.