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Finding the Fourth Proportional to 608.60, 840.27 and 468.47

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Solution

The fourth proportional to 608.60, 840.27 and 468.47 is: 646.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.60 : 840.27 = 468.47 : x
  2. Step 2: Convert to fraction form
    608.60/840.27 = 468.47/x
  3. Step 3: Cross multiply
    608.60x = 840.27 × 468.47
  4. Step 4: Simplify right side
    608.60x = 393,645.14
  5. Step 5: Solve for x
    x = 393,645.14/608.60
  6. Step 6: Final answer
    x = 646.80

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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.