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Finding the Fourth Proportional to 438.99, 605.77 and 242.52

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Solution

The fourth proportional to 438.99, 605.77 and 242.52 is: 334.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.99 : 605.77 = 242.52 : x
  2. Step 2: Convert to fraction form
    438.99/605.77 = 242.52/x
  3. Step 3: Cross multiply
    438.99x = 605.77 × 242.52
  4. Step 4: Simplify right side
    438.99x = 146,911.34
  5. Step 5: Solve for x
    x = 146,911.34/438.99
  6. Step 6: Final answer
    x = 334.66

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.