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Finding the Fourth Proportional to 514.98, 772.54 and 309.51

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Solution

The fourth proportional to 514.98, 772.54 and 309.51 is: 464.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.98 : 772.54 = 309.51 : x
  2. Step 2: Convert to fraction form
    514.98/772.54 = 309.51/x
  3. Step 3: Cross multiply
    514.98x = 772.54 × 309.51
  4. Step 4: Simplify right side
    514.98x = 239,108.08
  5. Step 5: Solve for x
    x = 239,108.08/514.98
  6. Step 6: Final answer
    x = 464.31

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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.