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Finding the Fourth Proportional to 440.59, 608.58 and 342.58

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Solution

The fourth proportional to 440.59, 608.58 and 342.58 is: 473.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.59 : 608.58 = 342.58 : x
  2. Step 2: Convert to fraction form
    440.59/608.58 = 342.58/x
  3. Step 3: Cross multiply
    440.59x = 608.58 × 342.58
  4. Step 4: Simplify right side
    440.59x = 208,487.34
  5. Step 5: Solve for x
    x = 208,487.34/440.59
  6. Step 6: Final answer
    x = 473.20

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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.