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Finding the Fourth Proportional to 436.59, 602.64 and 387.18

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Solution

The fourth proportional to 436.59, 602.64 and 387.18 is: 534.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.59 : 602.64 = 387.18 : x
  2. Step 2: Convert to fraction form
    436.59/602.64 = 387.18/x
  3. Step 3: Cross multiply
    436.59x = 602.64 × 387.18
  4. Step 4: Simplify right side
    436.59x = 233,330.16
  5. Step 5: Solve for x
    x = 233,330.16/436.59
  6. Step 6: Final answer
    x = 534.44

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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.