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Finding the Fourth Proportional to 452.81, 624.88 and 245.81

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Solution

The fourth proportional to 452.81, 624.88 and 245.81 is: 339.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.81 : 624.88 = 245.81 : x
  2. Step 2: Convert to fraction form
    452.81/624.88 = 245.81/x
  3. Step 3: Cross multiply
    452.81x = 624.88 × 245.81
  4. Step 4: Simplify right side
    452.81x = 153,603.62
  5. Step 5: Solve for x
    x = 153,603.62/452.81
  6. Step 6: Final answer
    x = 339.22

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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.