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Finding the Fourth Proportional to 400.40, 551.76 and 373.04

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Solution

The fourth proportional to 400.40, 551.76 and 373.04 is: 514.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.40 : 551.76 = 373.04 : x
  2. Step 2: Convert to fraction form
    400.40/551.76 = 373.04/x
  3. Step 3: Cross multiply
    400.40x = 551.76 × 373.04
  4. Step 4: Simplify right side
    400.40x = 205,828.55
  5. Step 5: Solve for x
    x = 205,828.55/400.40
  6. Step 6: Final answer
    x = 514.06

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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.