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Finding the Fourth Proportional to 436.53, 602.01 and 386.81

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Solution

The fourth proportional to 436.53, 602.01 and 386.81 is: 533.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.53 : 602.01 = 386.81 : x
  2. Step 2: Convert to fraction form
    436.53/602.01 = 386.81/x
  3. Step 3: Cross multiply
    436.53x = 602.01 × 386.81
  4. Step 4: Simplify right side
    436.53x = 232,863.49
  5. Step 5: Solve for x
    x = 232,863.49/436.53
  6. Step 6: Final answer
    x = 533.44

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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.