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Finding the Fourth Proportional to 417.18, 621.42 and 373.44

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Solution

The fourth proportional to 417.18, 621.42 and 373.44 is: 556.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.18 : 621.42 = 373.44 : x
  2. Step 2: Convert to fraction form
    417.18/621.42 = 373.44/x
  3. Step 3: Cross multiply
    417.18x = 621.42 × 373.44
  4. Step 4: Simplify right side
    417.18x = 232,063.08
  5. Step 5: Solve for x
    x = 232,063.08/417.18
  6. Step 6: Final answer
    x = 556.27

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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.