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Finding the Fourth Proportional to 452.02, 623.77 and 319.10

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Solution

The fourth proportional to 452.02, 623.77 and 319.10 is: 440.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.02 : 623.77 = 319.10 : x
  2. Step 2: Convert to fraction form
    452.02/623.77 = 319.10/x
  3. Step 3: Cross multiply
    452.02x = 623.77 × 319.10
  4. Step 4: Simplify right side
    452.02x = 199,046.39
  5. Step 5: Solve for x
    x = 199,046.39/452.02
  6. Step 6: Final answer
    x = 440.35

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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.