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Finding the Fourth Proportional to 452.76, 624.56 and 278.07

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Solution

The fourth proportional to 452.76, 624.56 and 278.07 is: 383.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.76 : 624.56 = 278.07 : x
  2. Step 2: Convert to fraction form
    452.76/624.56 = 278.07/x
  3. Step 3: Cross multiply
    452.76x = 624.56 × 278.07
  4. Step 4: Simplify right side
    452.76x = 173,670.01
  5. Step 5: Solve for x
    x = 173,670.01/452.76
  6. Step 6: Final answer
    x = 383.58

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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.