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Finding the Fourth Proportional to 436.08, 655.08 and 340.08

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Solution

The fourth proportional to 436.08, 655.08 and 340.08 is: 510.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.08 : 655.08 = 340.08 : x
  2. Step 2: Convert to fraction form
    436.08/655.08 = 340.08/x
  3. Step 3: Cross multiply
    436.08x = 655.08 × 340.08
  4. Step 4: Simplify right side
    436.08x = 222,779.61
  5. Step 5: Solve for x
    x = 222,779.61/436.08
  6. Step 6: Final answer
    x = 510.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.