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Finding the Fourth Proportional to 613.17, 914.49 and 608.31

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Solution

The fourth proportional to 613.17, 914.49 and 608.31 is: 907.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.17 : 914.49 = 608.31 : x
  2. Step 2: Convert to fraction form
    613.17/914.49 = 608.31/x
  3. Step 3: Cross multiply
    613.17x = 914.49 × 608.31
  4. Step 4: Simplify right side
    613.17x = 556,293.41
  5. Step 5: Solve for x
    x = 556,293.41/613.17
  6. Step 6: Final answer
    x = 907.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.