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Finding the Fourth Proportional to 505.47, 756.14 and 359.21

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Solution

The fourth proportional to 505.47, 756.14 and 359.21 is: 537.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.47 : 756.14 = 359.21 : x
  2. Step 2: Convert to fraction form
    505.47/756.14 = 359.21/x
  3. Step 3: Cross multiply
    505.47x = 756.14 × 359.21
  4. Step 4: Simplify right side
    505.47x = 271,613.05
  5. Step 5: Solve for x
    x = 271,613.05/505.47
  6. Step 6: Final answer
    x = 537.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.