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Finding the Fourth Proportional to 955.65, 1,318.80 and 536.02

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Solution

The fourth proportional to 955.65, 1,318.80 and 536.02 is: 739.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.65 : 1,318.80 = 536.02 : x
  2. Step 2: Convert to fraction form
    955.65/1,318.80 = 536.02/x
  3. Step 3: Cross multiply
    955.65x = 1,318.80 × 536.02
  4. Step 4: Simplify right side
    955.65x = 706,898.87
  5. Step 5: Solve for x
    x = 706,898.87/955.65
  6. Step 6: Final answer
    x = 739.71

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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.