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Finding the Fourth Proportional to 417.44, 574.55 and 384.64

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Solution

The fourth proportional to 417.44, 574.55 and 384.64 is: 529.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.44 : 574.55 = 384.64 : x
  2. Step 2: Convert to fraction form
    417.44/574.55 = 384.64/x
  3. Step 3: Cross multiply
    417.44x = 574.55 × 384.64
  4. Step 4: Simplify right side
    417.44x = 220,994.91
  5. Step 5: Solve for x
    x = 220,994.91/417.44
  6. Step 6: Final answer
    x = 529.41

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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.