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Finding the Fourth Proportional to 452.76, 624.80 and 245.76

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Solution

The fourth proportional to 452.76, 624.80 and 245.76 is: 339.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.76 : 624.80 = 245.76 : x
  2. Step 2: Convert to fraction form
    452.76/624.80 = 245.76/x
  3. Step 3: Cross multiply
    452.76x = 624.80 × 245.76
  4. Step 4: Simplify right side
    452.76x = 153,550.85
  5. Step 5: Solve for x
    x = 153,550.85/452.76
  6. Step 6: Final answer
    x = 339.14

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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.