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Finding the Fourth Proportional to 550.13, 758.30 and 505.98

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Solution

The fourth proportional to 550.13, 758.30 and 505.98 is: 697.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.13 : 758.30 = 505.98 : x
  2. Step 2: Convert to fraction form
    550.13/758.30 = 505.98/x
  3. Step 3: Cross multiply
    550.13x = 758.30 × 505.98
  4. Step 4: Simplify right side
    550.13x = 383,682.10
  5. Step 5: Solve for x
    x = 383,682.10/550.13
  6. Step 6: Final answer
    x = 697.45

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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.