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Finding the Fourth Proportional to 452.04, 623.34 and 390.06

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Solution

The fourth proportional to 452.04, 623.34 and 390.06 is: 537.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.04 : 623.34 = 390.06 : x
  2. Step 2: Convert to fraction form
    452.04/623.34 = 390.06/x
  3. Step 3: Cross multiply
    452.04x = 623.34 × 390.06
  4. Step 4: Simplify right side
    452.04x = 243,140.00
  5. Step 5: Solve for x
    x = 243,140.00/452.04
  6. Step 6: Final answer
    x = 537.87

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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.