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Finding the Fourth Proportional to 436.52, 602.58 and 312.23

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Solution

The fourth proportional to 436.52, 602.58 and 312.23 is: 431.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.52 : 602.58 = 312.23 : x
  2. Step 2: Convert to fraction form
    436.52/602.58 = 312.23/x
  3. Step 3: Cross multiply
    436.52x = 602.58 × 312.23
  4. Step 4: Simplify right side
    436.52x = 188,140.54
  5. Step 5: Solve for x
    x = 188,140.54/436.52
  6. Step 6: Final answer
    x = 431.01

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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.