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Finding the Fourth Proportional to 417.22, 623.54 and 384.37

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Solution

The fourth proportional to 417.22, 623.54 and 384.37 is: 574.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.22 : 623.54 = 384.37 : x
  2. Step 2: Convert to fraction form
    417.22/623.54 = 384.37/x
  3. Step 3: Cross multiply
    417.22x = 623.54 × 384.37
  4. Step 4: Simplify right side
    417.22x = 239,669.47
  5. Step 5: Solve for x
    x = 239,669.47/417.22
  6. Step 6: Final answer
    x = 574.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.