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Finding the Fourth Proportional to 509.93, 703.77 and 300.18

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Solution

The fourth proportional to 509.93, 703.77 and 300.18 is: 414.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.93 : 703.77 = 300.18 : x
  2. Step 2: Convert to fraction form
    509.93/703.77 = 300.18/x
  3. Step 3: Cross multiply
    509.93x = 703.77 × 300.18
  4. Step 4: Simplify right side
    509.93x = 211,254.16
  5. Step 5: Solve for x
    x = 211,254.16/509.93
  6. Step 6: Final answer
    x = 414.28

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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.