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Finding the Fourth Proportional to 395.53, 590.45 and 368.19

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Solution

The fourth proportional to 395.53, 590.45 and 368.19 is: 549.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.53 : 590.45 = 368.19 : x
  2. Step 2: Convert to fraction form
    395.53/590.45 = 368.19/x
  3. Step 3: Cross multiply
    395.53x = 590.45 × 368.19
  4. Step 4: Simplify right side
    395.53x = 217,395.94
  5. Step 5: Solve for x
    x = 217,395.94/395.53
  6. Step 6: Final answer
    x = 549.64

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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.