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Finding the Fourth Proportional to 735.43, 1,013.08 and 630.18

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Solution

The fourth proportional to 735.43, 1,013.08 and 630.18 is: 868.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.43 : 1,013.08 = 630.18 : x
  2. Step 2: Convert to fraction form
    735.43/1,013.08 = 630.18/x
  3. Step 3: Cross multiply
    735.43x = 1,013.08 × 630.18
  4. Step 4: Simplify right side
    735.43x = 638,422.75
  5. Step 5: Solve for x
    x = 638,422.75/735.43
  6. Step 6: Final answer
    x = 868.09

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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.