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Finding the Fourth Proportional to 505.23, 756.89 and 402.63

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Solution

The fourth proportional to 505.23, 756.89 and 402.63 is: 603.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.23 : 756.89 = 402.63 : x
  2. Step 2: Convert to fraction form
    505.23/756.89 = 402.63/x
  3. Step 3: Cross multiply
    505.23x = 756.89 × 402.63
  4. Step 4: Simplify right side
    505.23x = 304,746.62
  5. Step 5: Solve for x
    x = 304,746.62/505.23
  6. Step 6: Final answer
    x = 603.18

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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.