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Finding the Fourth Proportional to 735.96, 1,015.68 and 425.46

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Solution

The fourth proportional to 735.96, 1,015.68 and 425.46 is: 587.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.96 : 1,015.68 = 425.46 : x
  2. Step 2: Convert to fraction form
    735.96/1,015.68 = 425.46/x
  3. Step 3: Cross multiply
    735.96x = 1,015.68 × 425.46
  4. Step 4: Simplify right side
    735.96x = 432,131.21
  5. Step 5: Solve for x
    x = 432,131.21/735.96
  6. Step 6: Final answer
    x = 587.17

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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.