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Finding the Fourth Proportional to 452.68, 677.40 and 392.02

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Solution

The fourth proportional to 452.68, 677.40 and 392.02 is: 586.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.68 : 677.40 = 392.02 : x
  2. Step 2: Convert to fraction form
    452.68/677.40 = 392.02/x
  3. Step 3: Cross multiply
    452.68x = 677.40 × 392.02
  4. Step 4: Simplify right side
    452.68x = 265,554.35
  5. Step 5: Solve for x
    x = 265,554.35/452.68
  6. Step 6: Final answer
    x = 586.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.