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Finding the Fourth Proportional to 452.04, 623.88 and 312.48

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Solution

The fourth proportional to 452.04, 623.88 and 312.48 is: 431.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.04 : 623.88 = 312.48 : x
  2. Step 2: Convert to fraction form
    452.04/623.88 = 312.48/x
  3. Step 3: Cross multiply
    452.04x = 623.88 × 312.48
  4. Step 4: Simplify right side
    452.04x = 194,950.02
  5. Step 5: Solve for x
    x = 194,950.02/452.04
  6. Step 6: Final answer
    x = 431.27

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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.