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Finding the Fourth Proportional to 735.92, 1,015.72 and 425.52

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Solution

The fourth proportional to 735.92, 1,015.72 and 425.52 is: 587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.92 : 1,015.72 = 425.52 : x
  2. Step 2: Convert to fraction form
    735.92/1,015.72 = 425.52/x
  3. Step 3: Cross multiply
    735.92x = 1,015.72 × 425.52
  4. Step 4: Simplify right side
    735.92x = 432,209.17
  5. Step 5: Solve for x
    x = 432,209.17/735.92
  6. Step 6: Final answer
    x = 587.30

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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.