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Finding the Fourth Proportional to 445.04, 613.68 and 383.08

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Solution

The fourth proportional to 445.04, 613.68 and 383.08 is: 528.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.04 : 613.68 = 383.08 : x
  2. Step 2: Convert to fraction form
    445.04/613.68 = 383.08/x
  3. Step 3: Cross multiply
    445.04x = 613.68 × 383.08
  4. Step 4: Simplify right side
    445.04x = 235,088.53
  5. Step 5: Solve for x
    x = 235,088.53/445.04
  6. Step 6: Final answer
    x = 528.24

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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.