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Finding the Fourth Proportional to 955.58, 1,318.75 and 535.93

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Solution

The fourth proportional to 955.58, 1,318.75 and 535.93 is: 739.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.58 : 1,318.75 = 535.93 : x
  2. Step 2: Convert to fraction form
    955.58/1,318.75 = 535.93/x
  3. Step 3: Cross multiply
    955.58x = 1,318.75 × 535.93
  4. Step 4: Simplify right side
    955.58x = 706,753.05
  5. Step 5: Solve for x
    x = 706,753.05/955.58
  6. Step 6: Final answer
    x = 739.61

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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.