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Finding the Fourth Proportional to 696.27, 960.55 and 500.05

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Solution

The fourth proportional to 696.27, 960.55 and 500.05 is: 689.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.27 : 960.55 = 500.05 : x
  2. Step 2: Convert to fraction form
    696.27/960.55 = 500.05/x
  3. Step 3: Cross multiply
    696.27x = 960.55 × 500.05
  4. Step 4: Simplify right side
    696.27x = 480,323.03
  5. Step 5: Solve for x
    x = 480,323.03/696.27
  6. Step 6: Final answer
    x = 689.85

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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.