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Finding the Fourth Proportional to 440.61, 609.12 and 436.46

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Solution

The fourth proportional to 440.61, 609.12 and 436.46 is: 603.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.61 : 609.12 = 436.46 : x
  2. Step 2: Convert to fraction form
    440.61/609.12 = 436.46/x
  3. Step 3: Cross multiply
    440.61x = 609.12 × 436.46
  4. Step 4: Simplify right side
    440.61x = 265,853.47
  5. Step 5: Solve for x
    x = 265,853.47/440.61
  6. Step 6: Final answer
    x = 603.38

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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.